I'm not saying the neuro opthalmologist was correct, Erika. That was just what he thought from having read material on studies of the use of steroids for ON. I would not have been able to take the steroids which I've read are used for ON, such as Prednisone or that other one by IV, because I have Porphyria. But we didn't know I had it then. I could have taken Cortisone, which is OK for Porphyria, but I don't know if that's used for ON. I have had cortisone several times to alleviate various pains, and always with success, but not for the ON, which was gone before I used the cortisone.