Lenses, not just frames
How to Choose Progressive Lenses
Progressives are a distance lens that turns into a reading lens with no line. The corridor length, the frame height, and an accurate PD decide whether you adapt in three days or three months.
Updated 27 Aug 2026 · 6 min read · how to choose progressive lenses
The corridor is the product
A progressive is distance at the top, near at the bottom, a narrowing channel of ‘almost right’ in between. Shorter corridors fit small frames and put near vision higher — good for phones, worse for stairs if you glance down. Longer corridors need 32mm+ of height and feel more natural for a desk.
If you spend 6–8 hours on a 50–70cm monitor, say so. You may want an office/occupational progressive with a wider intermediate, and a separate driving pair.
Frame first, then the lens design
A shallow cat-eye with 24mm of height cannot hold a useful corridor. Measure the B dimension (lens height). Under 28mm, consider a lined bifocal or single-vision computer glasses instead of a cheap progressive.
| Add power | What to buy | Skip |
|---|---|---|
| +0.75 to +1.25 | Entry free-form is fine | Thick lined bifocal unless you want the line |
| +1.50 to +2.00 | Mid-range free-form, 30mm+ height | Generic stock progressive |
| +2.25 and up | Premium, accurate PD and fitting height | Online guesswork |
Adaptation is a week, not a personality test
Point your nose at what you read. Use the stairs with the distance zone, not the reading zone. If swim and swim after 10–14 days, the fitting height or PD is wrong — go back. That is a measurement error, not a moral failing. Pair with high-index if the prescription is strong so the edge does not shout.
Questions, answered
- Are expensive progressives worth it?
- Above +1.50 add, usually. You are buying a wider usable zone. Below that, a competent mid-range lens in a tall enough frame is enough.
- Can I buy progressives online?
- You can. Success needs a real PD, a fitting height, and a frame with enough B. If any of those is a guess, buy in person.
- Will I still need reading glasses?
- Not if the add is right and you use the bottom of the lens. Many people still keep a $15 pair by the bed.
