I Am In The Recovery Stage Of Having Detached Retina

I am in the recovery stage of having detached Retina surgery and while in the doctor's office today I read an interesting article taped to his wall about Degenerative (here is my problem can't remember second word ) but I think it was something proprioceptor cells and there is research going on with fish at a major hospital. do you know what the word is I have been trying to remember?