Comment on Guess I'll km/s
rockerface@lemm.ee 4 months agoYeah, from my experience ordering glasses, it’s mostly about making sure the lenses are aligned with my retinas to focus the light in the right spots. All the numbers are just a way to formalize those measurements so that the lens maker gets it right
Technus@lemmy.zip 4 months ago
My last optometrist refused to tell me what my prescription was. I should have insisted, they’ve since closed up shop.