Of course I must set my sights on my symptoms. I have no double vision, but wear bifocals (progressive - no line glasses.) I sometimes do have focusing problems: blurred vision, or the bifocals don't seem to work. Sometimes transitioning from distance to reading gets a little "locked" and slow. I have heard Glaucoma can develop when one takes sinemet. In fact, I think it's in the PDR, so I get examined regularly. Maybe vision is an "exerciseaa" problem - works for me - never fear the "lazy eye" in a PWP. Finally I had a real vision problem when I announced to everyone close to me (friends) that I had a "chronic, incurable, progressive, degenerative neuro-musclar illness" so why would they want to be around me. I'm over that vision problem now.