Karen - it is the worst PD-related problem I have. From all I have read (and from my discussions with my neuro and my neurological opthomalogist) both blurred and double vision are a function of Parkinson's, not Sinemet. I am on my third set of glasses (in the last two years) with increasingly strong prisms to control the double vision--both for distance and reading. It is mostly successful with the distance. Unless I am very tired I can watch television with the distance glasses and see only one head at a time. For driving, the prism glasses have also been very successful. But I had one very bad day last week when I couldn't keep mty eyes open while I was driving (blephorospasm), saw two of everything and blurring simultaneously. It was ghastly. I was clearly not "on" in other ways as well. I went home as fast as my wobbly car could carry me and stayed there until I was totally "on" and then found that the problem had gone away and was just a terrible memory. But I will be very careful in the future with the driving. And I did make another appointment with the neuro eye doctor for next week. Reading is a different problem. The prism reading glasses are very strong and require me to hold the book very close. They do not resolve the double vision and blurring problems if I am at all tired (and we are all tired a lot!). I used to read 3 or 4 books a week and now it takes me 2-3 weeks to get through a book -- a chapter at a time. This saddens me a lot. I feel impoverished. I hope you find some help-- and hope that others will talk about this problem too. Neuros seem to pay little attention to it. I had to force a referral out of my neuro. Nancy Shlaes deGrazia Karen Bastian wrote: > HI evreyone! > Does anyone out there know anything about vision problems--blurry vision > or a foggy > problem, is this a side effect of sinemet? Anyone else have this?? > THANK YOU > KAREN