My eye sight got MUCH worse after a covid infection. I was 20/20 or better before covid, now everything is blurry outside of a very narrow distance range, and white anything can hurt. Granted I'm over 50, so I was expecting my eyes to go bad at some point.
fever triggering impending physiological changes maybe
May be a timing coincidence - I'm in my mid 40s and my eyes are changing rapidly and getting much less flexible in terms of range. I'm switching between three different pairs of glasses for different distances, and need new prescriptions every year.