Can we talk about glasses?

Has anyone switched to better/worse glasses and felt any difference in performance?
How about those fancy lenses "for artist professionals" that cost 3 times more for their precision?

Do you also have to wash it twice a day before drawing, and it's still dirty enough to annoy you?

I used to have no trouble with computers for nearly a decade, but in recent years I started to think I'm squinting or hunching a lot (blamed my new 1080p monitor), my attention span has gone to shit (blamed the Internet and instant dopamine) and I sleep a lot (blamed bad diet).

But it dawned on me I might just be going blind, so I need a new prescription. (I'm farsighted, btw).