Some of the official art of Koyomi shows her without her glasses, but I don't know if she uses contact lenses. Her glasses don't seem to have a very high refractive index, so I think she could probably walk around without crashing into things.
Madoka! You're eating the paper!munch
munchGlasses, glasses...
Where are my glasses?Sousai Shoujo Teien Activity DiaryIs it dinner yet?The tsukkomi has become sharperOn your head!
So cliche!?
Ah~I'm so full.After a year of activities, Ritsuka's tsukkomi (act) had become sharper.Ah~ice (cream)
Yummy~Just now!!
You just ate!!