I've read from various link that to measure power/dioptre of eye glasses lens, we need to put far point into equation for nearsightedness and near point for farsightedness.

The problem is I cant find the standard procedure to measure those values. Can I just put a letter on the wall and walk away step by step until its blurry to measure far point and hold a paper in my hand with a letter and push it away until its clear to see for measuring farsightedness?


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.