After three vet trips masked up and stared at, our cat, Cotton got better. The third visit was just a follow up.
She had an eye infection and I treated it at home with ophthalmic feline drops I had on hand from kitten fostering. They were working but she did have some scarring on her cornea and we were concerned, she might lose her eye. But after a vet dye eye scraping, and daily treatment (the vet was out of drops) she got better.
Those big green eyes are better and Cotton now hates cages and hilly car rides. The heat outside is over 95 and humid, so we traveled with ice packs to keep her cool. She is happy and watching me can tomatillo for green salsa.