How come you can buy reading glasses for a few bucks at pharmacies or Wal-Mart, but they don’t make them for being able to see farther away?

Question

Is the lens grinding process more complicated or is there just too much variation in eyesight to make them feasible on a mass scale?

In: Other

Answer 1

reading glasses don’t correct farsightedness. They are the equivalent of changing the zoom level on your browser so that you can read reddit easier.

You can’t do that with a book or newspaper, so reading glasses magnify it for you. Even then, it still might be too blurry for you to read in which case you need corrective lenses…….and no two people really need the same lenses. Even person to person, your prescription changes. The glasses I used to wear 2 years ago don’t work as well as the ones I wear now.

but yes, there is too much variation. if you and I had an identical eye issue, my glasses might not correct your issue because the distance from my eyes to the lenses is different than yours.