I sat on my glasses about 6 years after I was given them to correct my vision.
I went to the eye guy (optometrist?) to receive a new pair of glasses, and he tested my eyes first.
He asked me WHY I wanted glasses and I told him - (to see signs far away, especially clearly , at night, and when driving) otherwise I didn't want to wear them...
Then I asked him WHY he asked me (what seemed like such a sillly question to me - why does anyone go to get glasses? ) ...
SURPRISE ! He told me - my eyes BOTH TESTED 20/20..... (turns out this happens enough it is called 'second vision', but he did not tell me that) .... I still got glasses, but rarely used them, and never any more.... so far.
He said he did not know why some people's vision improves.
I found out later William Bates showed why , to over 40,000 patients/ students/ people of all age groups.
So he was black listed. People can still get 20.20 though, the same way, if they want to, with no drugs and no surgery. (unless damaged)....
Everyone who went to him was helped.