McGonagall is described as wearing glasses and so is Dumbledore. Doesn’t make much sense though, if they can mend bones in an instant and fetus deletus, then there is surely a spell to give perfect vision.

Why would they need glasses at all? If you have magic, then glasses are always a fashion choice

Hahaha

Percy Weasley and Moaning Myrtle wear/wore glasses

I recall reading something that harry needs glasses because his bad eyesight was caused by the flash off the killing curse but i am not sure if thats canon.

There is no canon spell for that that we know so maybe it wasn’t invented yet.