In 1987, I was told that due to eyesight that I would never have anything other than a class 3 and be nothing other than a private pilot.
I pursued another career which was more lucrative that aviation.
15 years later it was possible to get a class 1 and I did. Although it was too late the have a career in the airlines, I have a very enjoyable part time job as an instructor and get to fly lots of other aircraft and meet some fantastic people.
Things change, it will not be long before diabetics will be able to fly solo without safety pilots.