What does my eyeglasses prescription mean?!
Question: What does my eyeglasses prescription mean?
I can't remember which it was under, but the numbers for my eyes were 675 in one and 730 in the other. I always see eyes measured on a scale like this: 20/50. What does mine mean?
Answers:
Best Answer - Chosen by Voters
Those are 2 different things.
The numbers like - 6.75 is the power of the lenses...the actual prescription you need for glasses
Numbers like 20/50 is just the visual acuity...the lines of letters you can see on the chart which doesn't give enough information to make glasses or contacts with.
Optician