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Find expert ratings, style tips, and buying guides for glasses and sunglasses to help you choose the perfect pair.","online eyewear review, glasses review, sunglasses review, eyewear ratings, best eyeglasses, buying guide glasses, stylish eyewear, affordable sunglasses","2025-06-12 16:25:26","online-eyewear-review",[768],{"id":140,"title":761,"head_title":762,"head_description":763,"head_keywords":764,"sort":5,"create_time":769,"pid":136,"leve":15,"status":5,"url_title":766,"list_title":761,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":761},"2025-06-12 16:30:14",{"id":144,"title":771,"head_title":8,"head_description":8,"head_keywords":8,"sort":71,"create_time":772,"pid":9,"leve":5,"status":5,"url_title":773,"list_title":103,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":8,"list":774},"Glasses Choosing & Lifestyle Guides","2025-12-08 20:49:34","glasses-lifestyle-guides",[775,777],{"id":148,"title":771,"head_title":8,"head_description":8,"head_keywords":8,"sort":5,"create_time":776,"pid":144,"leve":15,"status":5,"url_title":773,"list_title":771,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":771},"2025-12-08 20:53:58",{"id":63,"title":778,"head_title":779,"head_description":8,"head_keywords":8,"sort":5,"create_time":780,"pid":144,"leve":15,"status":5,"url_title":781,"list_title":778,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":778},"Fashion & Trends","Fashion & Trends | Eyewear Styles, Trends & Inspiration","2026-07-28 11:40:01","fashion-and-trends",{"id":95,"title":783,"head_title":784,"head_description":8,"head_keywords":8,"sort":67,"create_time":785,"pid":9,"leve":5,"status":5,"url_title":786,"list_title":8,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":8,"list":787},"Recommended Glasses","Find why Lensmart recommends these glasses - Lensmart Blog","2023-09-26 15:15:23","recommended-glasses",[788],{"id":129,"title":789,"head_title":790,"head_description":8,"head_keywords":8,"sort":5,"create_time":791,"pid":95,"leve":15,"status":5,"url_title":792,"list_title":793,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":793},"Lensmart's Picks","Lensmart's Pick: Explore The Best Glasses for This Year","2023-09-26 15:20:35","picks","Explore The Best Glasses with Lensmart",{"id":156,"title":795,"head_title":796,"head_description":8,"head_keywords":8,"sort":59,"create_time":797,"pid":9,"leve":5,"status":5,"url_title":798,"list_title":103,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":8,"list":799},"Holiday Sale","holiday-sale - Lensmart Blog","2024-11-06 11:12:18","holiday-sale",[800],{"id":132,"title":795,"head_title":796,"head_description":8,"head_keywords":8,"sort":5,"create_time":801,"pid":156,"leve":15,"status":5,"url_title":798,"list_title":795,"list_comment":8,"pc_img":8,"wap_img":8,"listtitlelang":795},"2024-11-06 11:16:15",{"type":803,"list":806,"url":816},{"p_type":804,"pp_type":805},{"id":126,"title":643,"pid":9,"head_title":644,"head_description":8,"head_keywords":8,"url_title":646,"list_title":8,"list_comment":8,"pc_img":8,"wap_img":8},{"id":35,"title":687,"pid":126,"head_title":688,"head_description":689,"head_keywords":8,"url_title":691,"list_title":687,"list_comment":8,"pc_img":8,"wap_img":8},{"id":807,"type_id":35,"sort":9,"desc":808,"title":809,"img_alt":8,"img":810,"f_title":103,"url_title":811,"label":8,"author":8,"content":812,"head_title":813,"head_description":808,"head_keywords":8,"create_time":814,"status":5,"is_tj":9,"desclang":815,"head_canonical":8,"author_id":9,"author_img":8,"author_role":8,"author_content":8},1018,"See how myopia SPH numbers from -0.25 to -6.00 relate to everyday vision, glasses use, lens thickness, and the best frame options for each range.","SPH -0.25 to -6.00: What Your Myopia Number Means in Real Life","https://image.lensmartonline.com/product/2026-07-28/1785204887669883.jpg","myopia-sph-range-guide-explained","\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">You check your glasses prescription and see \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-2.00 next to SPH\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, with no clue what that number actually changes about your day. Myopia SPH numbers explained on a chart rarely match what you actually notice in daily life. Each SPH value tells your optician exactly how much correction your eyes need. Your own number below can show you what changes for driving, reading, and picking new frames.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cimg src=\"https://image.lensmartonline.com/product/2026-07-28/1785204887540041.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"600\" height=\"343\"/>\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">A Fast Look at the Ranges Below\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-0.25 to -1.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, most people only reach for glasses while driving or watching a movie.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\"> -1.25 to -2.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, faces a few feet away start to lose detail without glasses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-2.25 to -3.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, full time glasses use becomes the norm for most people.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-3.25 to -4.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, lens edges can show up on larger frames.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-4.25 to -6.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, thin high index lenses and smaller frames become the practical choice.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">What a Minus Sign on Your Prescription Shows\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">If you are asking what does my myopia prescription mean, the short answer starts with the minus sign. It shows nearsightedness, so \u003C/span>\u003Ca href=\"https://www.nei.nih.gov/eye-health-information/eye-conditions-and-diseases/nearsightedness-myopia\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\" rel=\"nofollow\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">light focuses in front of the retina\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\"> instead of directly on it. Myopia diopters explained in simple terms come down to steps of 0.25 on the SPH line, with each step adding a bit more correction.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">The number on your chart describes how much correction your eyes need. It does not rate how weak your eyes are on its own. A common mix up is reading -3.00 as "300 degrees." That figure comes from a different scale used in some countries, where diopters are multiplied by 100 for convenience, but the SPH number on a standard prescription works differently.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Myopia Scale: From Mild to High\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Myopia prescription numbers fall into three broad groups, and each one shapes daily life a bit differently.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 27px\" class=\"firstRow\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Category\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">SPH Range\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Mild myopia\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-0.25 to -3.00\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Moderate myopia\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-3.25 to -6.00\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">High myopia\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Above -6.00\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Lens thickness, daily glasses use, and certain eye health checks all shift as the number climbs from one group to the next. \u003C/span>\u003Ca href=\"https://eyewiki.aao.org/Pathologic_Myopia_%28Myopic_Degeneration%29\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\" rel=\"nofollow\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">High myopia above -6.00 usually\u003C/span>\u003C/a> \u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">calls for closer eye health monitoring and more frequent checkups.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-0.25 to -1.00: You May Not Need Glasses Every Day\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">At -0.25 to -0.50, clear vision without glasses usually reaches about 6.6 to 13 feet (2 to 4 m). Most people handle daily tasks without wearing correction at this level.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">At -0.75 to -1.00, clear vision drops to about 3.3 to 4.4 feet (1 to 1.33 m). Faces a few steps away can start to lose sharpness at this point.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Driving is the main task that calls for glasses in this range.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Most states require correction once your vision falls below a set standard on the driving test.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Night driving can bring mild glare around headlights and streetlights.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A standard 1.50 index lens works fine here, with no need for a thinner option.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-1.25 to -2.00: Clear Up Close, Blurry a Few Feet Away\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Clear vision without glasses covers about 1.6 to 2.6 feet (0.5 to 0.8 m). A whiteboard from the back of a small classroom or a face across a table gets harder to read.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Close up tasks like reading a book or checking a phone stay sharp without correction.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Outdoor spaces and busy public areas feel harder to navigate without glasses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Night driving can bring noticeable glare and halos around lights.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Most people start wearing glasses full time once they reach this range.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A 1.50 index lens still works, though 1.57 gives a slightly thinner result.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-2.25 to -3.00: The Range Where Glasses Become a Daily Habit\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Clear vision without glasses drops to about 1.1 to 1.45 feet (33 to 44 cm) at -3.00, roughly the point where many people start to wonder how bad their vision really is.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A phone screen at typical reading distance, close to 12 inches (30 cm), stays clear without glasses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Seeing your own face clearly in a bathroom mirror gets difficult without correction.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Sports, cycling, and walking around a store all get harder without glasses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Many people at this level start asking their eye doctor about contacts or laser surgery.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Lens thickness starts to matter more, and 1.57 to 1.61 index lenses are worth asking about.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-3.25 to -4.00: When Lens Edges Start Showing on Your Frame\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Without glasses, clear vision falls to about 10 to 12 inches (25 to 31 cm).\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Daily tasks like showering or swimming rely fully on unaided vision at this level.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Lens edges can start to show along the sides of standard frames.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A slight shrinking look around the eyes can appear with stronger minus lenses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Larger or square frames tend to make lens thickness more visible.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A 1.61 index lens is a solid pick here, and 1.67 is worth asking about as you approach -4.00.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-4.25 to -6.00: You Need Both Clear Vision and a Thinner Lens\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Clear vision without glasses shrinks to about 6.5 to 9.3 inches (17 to 24 cm) here. Getting through a full day without correction becomes very hard.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Frame choice gets more limited too. Large frames paired with a strong prescription tend to show thick, visible edges. Eye health checks also matter more here, and \u003C/span>\u003Ca href=\"https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/myopia\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\" rel=\"nofollow\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">regular eye exams\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\"> are worth keeping up with once your prescription reaches this range.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Compact \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/eyeglasses/round\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">round frames\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\"> and \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/blog/eyeglass-lens/details/pros-and-cons-of-high-index-lenses\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">high index lenses\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\"> help keep lens thickness less noticeable. A 1.67 index lens is a good fit through most of this range. Laser surgery also becomes a realistic option for many people at this level. Prescriptions stronger than -8.00 sit outside the range covered here, and that is typically where a 1.74 index becomes the standard recommendation.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cimg src=\"https://image.lensmartonline.com/product/2026-07-28/1785204889937162.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"600\" height=\"343\"/>\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">What Your SPH Number Does Not Tell You\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">SPH covers only one part of a full prescription. Astigmatism, listed as CYL, and reading power, listed as ADD, can shape daily vision as much as SPH does.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Two people can share a -3.00 SPH and still see very differently if one also has -1.50 of astigmatism.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A stronger minus number does not directly show how healthy your eyes are, since corneal health and the back of the eye matter too.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Your SPH number alone does not predict how fast your prescription will change over time.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan style=\"font-family: public; font-size: 15px; color: rgb(51, 51, 51); letter-spacing: 0px; vertical-align: baseline;\">● \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A teenager at -2.00 can shift faster than an adult sitting at -4.00.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left MsoNormal\" style=\";font-size: 16px;font-family: 等线;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">A Quick Reference: What Can You See at Each SPH Level?\u003C/span>\u003C/h2>\u003Cp>\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ctable>\u003Ctbody>\u003Ctr style=\"height: 27px\" class=\"firstRow\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">SPH\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Clear Vision Range (No Glasses)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Daily Impact\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-center\" style=\";text-align: center;font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Suggested Lens Index\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-0.25 to -0.50\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 6.6 to 13 ft (2 to 4 m)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Low, mainly distance tasks\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.50\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-0.75 to -1.00\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 3.3 to 4.4 ft (1 to 1.33 m)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Low to moderate, some outdoor tasks\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.50\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-1.25 to -2.00\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 1.6 to 2.6 ft (0.5 to 0.8 m)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Moderate, public spaces get harder\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.50 to 1.57\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-2.25 to -3.00\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 1.1 to 1.45 ft (33 to 44 cm)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">High, glasses worn all day\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.57 to 1.61\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-3.25 to -4.00\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 10 to 12 in (25 to 31 cm)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Very high, lens edges show\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.61 to 1.67\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003Ctr style=\"height: 27px\">\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">-4.25 to -6.00\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">About 6.5 to 9.3 in (17 to 24 cm)\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Very high, frame choice limited\u003C/span>\u003C/p>\u003C/td>\u003Ctd colspan=\"1\" rowspan=\"1\" style=\"box-sizing: border-box; vertical-align: middle; padding: 0px 7.2px; border-width: 1px; border-color: rgb(0, 0, 0); border-style: solid;\">\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">1.67\u003C/span>\u003C/p>\u003C/td>\u003C/tr>\u003C/tbody>\u003C/table>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Higher lens index numbers cut down on edge thickness, which matters more once your prescription passes -4.00.\u003C/span> \u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">Lensmart also has a related guide to \u003C/span>\u003C/span>\u003Ca href=\"https://www.lensmartonline.com/blog/eyeglasses-online-buying-guide-blog/details/high-prescription-thin-lenses\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">thin glasses for high prescriptions\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cimg src=\"https://image.lensmartonline.com/product/2026-07-28/1785204888283334.jpg?imageView2/2/interlace/1/ignore-error/1/format/webp\" width=\"600\" height=\"343\"/>\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003C/span>\u003C/h2>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Find Your Fit at Lensmart Online\u003C/span>\u003C/h2>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Your SPH number lines up with a real level of blur, from a slightly soft street sign at -0.50 to a room that stays out of focus at -5.00. Frame style and lens thickness both shift as that number grows. \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Lensmart Online\u003C/span>\u003C/a> \u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">offers a range of \u003C/span>\u003Ca href=\"https://www.lensmartonline.com/eyeglasses\" style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public; text-decoration: underline;\">\u003Cspan style=\"font-size: 15px; color: rgb(30, 111, 255); letter-spacing: 0px; vertical-align: baseline; font-family: public;\">frame styles\u003C/span>\u003C/a>\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\"> and lens index choices, so you can look for a pair that fits your prescription, your face, and your budget.\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-size: 15px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">\u003Cbr/>\u003C/span>\u003C/p>\u003Ch2 class=\"paragraph text-align-type-left tco-title-heading 2\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 21px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">FAQs\u003C/span>\u003C/h2>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 19px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Q1: Is -3.00 considered bad eyesight?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">Not exactly\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">. -3.00 sits at the upper edge of mild myopia and the lower edge of moderate myopia. Clear vision without glasses reaches about 1.1 to 1.45 feet (33 to 44 cm) at this level. Most people at this stage wear glasses full time and see well with correction.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 19px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Q2: What can a person with -2.00 vision see without glasses?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">A person with -2.00 SPH usually sees clearly up to about \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">1.6 feet (0.5 m)\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">. Close up tasks like reading and phone use stay sharp without correction. Distance tasks like driving or reading street signs need glasses.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 19px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Q3: At what SPH do I need high index lenses?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">High index lenses become worth considering from about \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">-4.00\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\"> upward, where a 1.67 index gives a noticeably thinner result than a standard lens. Past -8.00, a 1.74 index offers the thinnest option available.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 19px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Q4: Does a higher myopia number mean my vision will keep getting worse?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">Not always\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">. A higher SPH shows how much correction your eyes need right now, not a fixed path forward. Age, genetics, and daily screen habits all play a part in how fast a prescription shifts over time.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Ch3 class=\"paragraph text-align-type-left tco-title-heading 3\" style=\"line-height: 1.5\">\u003Cspan style=\"font-size: 19px; letter-spacing: 0px; vertical-align: baseline; font-family: public;\">Q5: What is the difference between -1.00 and -2.00 vision in daily life?\u003C/span>\u003C/h3>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">At -1.00, clear vision reaches about \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">3.3 to 4.4 feet (1 to 1.33 m)\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, and glasses are mainly needed for driving. At -2.00, clear vision drops to about \u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; font-weight: bold; letter-spacing: 0px; vertical-align: baseline;\">1.6 to 2.6 feet (0.5 to 0.8 m)\u003C/span>\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">, and most people wear glasses all day.\u003C/span>\u003C/span>\u003C/p>\u003Cp class=\"paragraph text-align-type-left\" style=\";font-family: 等线;font-size: 16px;line-height: 1.5\">\u003Cspan style=\"font-family: public;\">\u003Cspan data-font-family=\"default\" style=\"font-family: public; font-size: 15px; letter-spacing: 0px; vertical-align: baseline;\">\u003Cbr/>\u003C/span>\u003C/span>\u003C/p>\u003Cp>\u003Cbr/>\u003C/p>","Myopia SPH Guide: -0.25 to -6.00 Explained","2026-07-28 10:20:26","{\"en\":\"See how myopia SPH numbers from -0.25 to -6.00 relate to everyday vision, glasses use, lens thickness, and the best frame options for each range.\",\"fr\":\"\",\"es\":\"\",\"de\":\"\",\"hu\":\"\",\"pt\":\"\",\"sk\":\"\"}","/prescription-guide/details/myopia-sph-range-guide-explained/"]