How to Choose the Right Reading Glasses Strength
Posted by Meridian Editorial on Apr 27 2026
Somewhere in your forties, restaurant menus quietly move an inch further away every year. That's presbyopia — the lens of the eye stiffening with age — and ready-made readers are the simplest fix. The only trick is picking the right strength.
The 60-second test
Hold a book or your phone at your natural reading distance — for most people, 14 to 16 inches. If text is only slightly soft, start at +1.0 or +1.5. If you're already stretching your arm to focus, try +2.0. If even arm's length has gone blurry, +2.5 is the likely fit. When you're between two strengths, take the weaker one: over-powered readers force your eyes to work against the lens and cause more fatigue than they solve.
Age is a decent shortcut
Most people land near +1.0–1.5 in their early-to-mid 40s, +1.5–2.0 in their late 40s to mid 50s, and +2.0–2.5 beyond that. Every eye differs, but the pattern is reliable enough that our PageTurner, Sunday Edition, and Marginalia readers all come in the same four strengths so you can rebuy without re-testing.
Different distances, different pairs
Readers are focused for one distance. Many people keep a stronger pair for books and a weaker pair for the computer, which sits farther away — a +2.0 book reader often pairs with a +1.0 or +1.25 for the monitor.
When readers aren't the answer
If one eye is noticeably blurrier than the other, if you see halos or distortion, or if headaches persist with the right strength, book an eye exam. Ready-made readers assume both eyes need the same simple correction; when that stops being true, an optometrist is the upgrade.