Hizashi always wore those orange sunglasses. Though, no one really knew they were prescribed sunglasses.
Yesterday, Hizashi lost his sunglasses- maybe he misplaced them, or dropped them on an intern patrol, but he couldn't find them. He owned a regular pair of glasses- which were rectangular shaped and white- but he hated wearing them. He thought he looked weird. Contacts were uncomfortable and burned his eyes, so that wasn't an option.
You took notice of how often he squinted at the chalk board, and how slow he was during training- he even ran into a couple things, but he refused to wear his back-up glasses.
Aizawa, Shirakumo, and Kayama were all out on patrol with their internship, so it was just you and Hizashi on the rooftop during lunch today.