How to Buy Progressive Lenses Online: A First-Timer's Guide
Your prescription now has an ADD number on it, and progressive lenses are the next step. Ordering them online saves money, but there are a few things that work differently from a standard pair of glasses. Get these right and the whole process is straightforward.
Quick Take
● Progressive lenses give you distance, intermediate, and near vision in one lens with no visible line.
● You need your monocular PD (one number per eye) and a prescription with an ADD value before you order.
● Frames need a minimum vertical height of 30mm or the reading zone gets cut off.
● Most people adjust within two weeks. Blur and mild dizziness in the first few days are normal.
How Are Progressive Lenses Different from Bifocals?
A progressive lens has three zones stacked vertically: distance at the top, intermediate in the middle (computer, dashboard), and near at the bottom (reading, phone). The zones blend into each other with no visible line. You shift between them by moving your gaze up or down.
A bifocal has two zones split by a hard line. There is no intermediate zone, so anything at arm's length (a screen, a shelf) falls in a blur gap between distance and reading.
Feature | Progressive | Bifocal | Reading Glasses |
Distance vision | Yes | Yes | No |
Intermediate (computer) | Yes | No | No |
Near vision | Yes | Yes | Yes |
Visible line | No | Yes | No |
Adaptation needed | Yes | Minimal | None |
Bifocals have a wider, more stable reading zone and almost no adaptation period. For anyone who spends most of their close-up time reading rather than on screens, they are still a reasonable choice.
Who Gets the Most Out of Progressive Glasses?
Progressive glasses suit people whose day moves between distances: driving, desk work, reading.One pair handles all of it.
Good Candidates
● Adults over 40 who wear distance glasses and now need reading help too
● Anyone who uses a computer for several hours a day
● People who want a line-free look
Worth Thinking About First
● Former bifocal wearers tend to have a harder time adapting to progressives
● High or complex prescriptions (strong astigmatism, ADD over +2.00) adapt more easily with a premium lens
● Very precise close-up work for long hours often feels better with a dedicated single-vision reading pair
What Information Do You Need Before You Order?
Two things are required that most first-time buyers do not think about until checkout.
The ADD Value
Your prescription needs an ADD value, a number typically between +0.75 and +3.00 listed as "ADD" or "Reading Add." Without it, progressive lenses cannot be made. Check your prescription before you start shopping.
Most retailers require a prescription dated within one to two years. If yours is older, book an eye exam first.
Monocular PD
For regular glasses, a single combined PD number works. For progressive lenses, you need monocular PD: two separate numbers, one per eye (e.g., 32/32 or 31/33). Each lens corridor needs to align with its own pupil. A combined number averages the two eyes and can shift one lens off-center enough to make the intermediate zone blurry or hard to find.
If your prescription only shows one PD number, most online retailers have a tool to help you measure monocular PD at home.
Before You Order Checklist
● Full prescription with ADD value
● Monocular PD (left / right separately)
● Prescription dated within the last two years
Which Frames Actually Work with Progressive Lenses?
The vertical height of the lens opening (called the B-measurement) needs to be at least 30mm for standard progressive lenses. Below that, the reading zone gets cut off during lens fitting.
When shopping online, look for "lens height" or "B-measurement" in the frame specs. If it is not listed, check with the retailer before ordering.
Shapes to Avoid
Frame Type | Why It Is a Problem |
Very shallow frames (under 30mm) | Reading zone gets cut off |
High-wrap sporty frames | Creates peripheral distortion |
Sharp cat-eye or aviator shapes | Reading zone ends up in the wrong position |
Full-rim rectangular, oval, and round frames with adequate depth work well. The frame also needs to sit level on your face. A frame that tilts or sits too low shifts the zones away from where your eyes actually look.
How Do You Choose Between Standard and Premium Progressive Lenses?
Standard lenses have a narrower clear corridor and more peripheral blur. They work well for simple prescriptions and buyers who are comfortable with a longer adaptation period.
Premium (freeform) lenses are digitally calculated for your specific prescription and frame. The clear corridor is wider, peripheral distortion is lower, and most people adapt faster.
Standard | Premium | |
Best for | Simple prescriptions, low ADD | Complex prescriptions, high ADD, prior adaptation difficulty |
Corridor width | Narrower | Wider |
Peripheral blur | More noticeable | Less noticeable |
Adaptation time | Longer | Shorter |
One coating worth adding to either tier: anti-reflective (AR) coating. Progressive lenses already have a narrower usable zone than single-vision lenses, and glare across that zone makes it harder to use, especially for screens and night driving.
What Should You Expect in the First Two Weeks?
Almost every first-time wearer finds the first few days uncomfortable. This is normal.
What Is Normal
● Peripheral blur: The outer edges look soft or distorted. Your brain learns to ignore this within days.
● Mild dizziness: Moving your eyes across zones feels disorienting at first, especially on stairs.
● Needing to move your head more: Point your nose toward what you want to see rather than just glancing sideways.
Rough Timeline
Period | What to Expect |
Days 1–3 | Noticeable blur, mild dizziness, zones hard to find |
Days 4–7 | Swim effect reduces, zones easier to locate |
Week 2 | Most people have adapted |
Beyond 2 weeks | Full adaptation for complex prescriptions |
First Week Tips
● Wear them consistently from day one. Switching back to your old pair resets the process.
● Start in familiar places before driving.
● On stairs, look through the top zone and go slowly.
When to Go Back
After two weeks of consistent wear, these are not normal and usually point to a PD or fitting issue:
● Blurry distance vision when looking straight through the top zone
● Needing to tilt your head noticeably to see your screen
● Persistent headaches beyond the first few days
● One eye much clearer than the other
Most online retailers and opticians offer remakes or adjustments within a set window. Contact them with specific details about which zone is blurry and what head position you need to find clarity.
Lensmart carries progressive lenses in standard and premium options, Check their return and remake policy before ordering.
Ready to Order Your First Pair?
Get your monocular PD, pick a frame with at least 30mm of lens height, choose the lens tier that fits your prescription, and plan for two weeks of adjustment. Find progressive glasses at Lensmart in standard and premium options across a wide range of frame styles.
FAQs
Q1: Are Progressive Lenses More Expensive than Bifocals?
Yes. Progressive lenses cost more than bifocals due to the more complex lens design. The price gap is smaller at online retailers than at optical shops. Premium freeform progressives cost more than standard options at the same retailer.
Q2: Can I Use My Progressive Prescription for Sunglasses?
Yes. A progressive prescription works the same way in sunglasses as in regular frames. The same rules apply: 30mm minimum lens height and monocular PD. Polarized lenses are a popular choice for progressive sunglasses, particularly for driving.
Q3: Why Do New Progressive Glasses Make Me Feel Dizzy?
Dizziness in the first few days is normal. The lens has multiple power zones and your visual system needs time to navigate between them. It usually resolves within a week. Dizziness that continues past two weeks usually points to a PD or fitting height issue rather than normal adaptation.
Q4: Do I Need a New Prescription Every Time I Order Progressive Lenses?
Yes. The ADD value changes as presbyopia progresses over time. Most online retailers require a prescription dated within one to two years. An outdated prescription will produce lenses that no longer match your current vision needs.
Q5: Can I Wear Progressive Lenses for Computer Work All Day?
Yes, but with a caveat. Standard progressives have a narrow intermediate zone, which can make full-day screen use uncomfortable. Premium freeform lenses have a wider corridor and work better for heavy computer use. Some people also keep a separate pair of single-vision computer glasses for desk work.
