Last time I lost my chess vision, I went to a chess optometrist who fitted me with chess glasses. This worked very well, and my health insurance paid for both the visit and the glasses. You should give this a try.
I was about to laugh, but then I remembered humour is supposed to be funny.
I used to have better vision at chess. I've been playing awful over the past couple of weeks for no apparent reason. Idk if I had some kind of IQ drop or something I don't know what happened but I lost my vision. I can't see simple blunders and positional mistakes. I love chess and I want to sincerely get better at it but losing 200+ ELO in a few weeks is painful and makes me feel stupid. Taking breaks doesn't seem to help either. Any advice?