I flew with the UK's ninth one-eyed pilot ~ 1963. Well, more correctly he became one-eyed after Channel Airways DC3 days. He passed the medical but became a tax inspector.
When I was 60 I flew several times with a one-eyed pilot. He'd not long had a licence when he had an accident. If it had happened before obtaining the licence he would never have been able to qualify. He has still I believe, a command on a substantial aircraft. He is or was a full training captain.