Graybeard, my wife has an eye problem that sounds sort of like yours. She has lesions in her left eye, cornea is turning cloudy. This happened about 5 years ago, and they stopped it with a medicine called methatrexite (prolly spelled wrong). It came back about 6 months ago. Her vision has degraded to 20/40. The best answer they have given us so far is something similar to arthritis in her eye.
Our thoughts are with you and would appreciate you remembering Deborah also.