Where Are All the Eyeglasses?
Roleplaying games rarely address flaws like poor eyesight. Or hearing.
The only case I know of is the pre-generated magic-user character in the H1-H4 Bloodstone Pass series of Advanced Dungeons & Dragons modules. He is near-sighted and has eyeglasses. His character description lists a die-roll penalty for vision-related actions performed when not wearing the eyeglasses.