My father-in-law was an ophthalmic surgeon who "retired" in his 60's. In his case, he had a clear "line in the sand", where his fine motor control became reduc

My father-in-law was an ophthalmic surgeon who "retired" in his 60's. In his case, he had a clear "line in the sand", where his fine motor control became reduced and he could no longer do the kind of delicate work his profession required. This means other surgeons are also compromised but are "getting away with it" and also giving poorer results.