I don't think I've ever had ON because my eyes have never hurt, but I do have Scotoma, which is a condition that leave black spots in your eyes, it is in both eyes and to the right, I can't drive anymore, I fall over things, I just can't see them. When I was diagnosed is when this happened and it is permanent, It has been almost 15 years and I don't think I have ever excepted it, it stops me from doing so much activity. So, I know how you feel about your eyesight.