I have macular degeneration in one eye and recently I noticed that I have sort of a small spot shimmer in my good eye. This only is seen when looking at the sky or a plain white wall. Went 4 times to an ophthalmologist and retinal specialist and they could not see any macular degeneration and they said I have a healthy macula. I am guessing that a comprehensive eye exam would show a problem and especially done 4 times by a different ophthalmologist. Any ideas what this could be? I have no migraines or headaches. This is not causing me any vision loss as my central vision is excellent. I am just concerned