Talking about specialised doctors that have been testing means to heal cataracts, I have quoted Dr. Catherine Orsoni (ophthalmologist at the Caen Hospital) in an other post for instance : we do not know much of what is done in hospitals and medical institutions or offices, but over the last centuries many people must have been working hard to find ways to heal cataracts, obviously...
But it seems to be really difficult to succeed.
It wouldn't be fair to underestimate what has been done...
This said, the french president had officially invited American searchers to come to France when "King Trumpet" was announcing severe budget cuts in scientific research a while back...