sight problems: my husband seemed - sometimes - to have a distortion in his vision of about 30 per cent, so he would see his drink, for instance, in the wrong place and knock it over, and find it difficult to pick up cutlery for the same reason.
his neurologist referred him to the same hospital eye dept, who gave him prescriptions for new glasses, reading and distance. but that didn't really solve the problem. when he went back, they suggested a prism over one lens, but he hated this, because he understood it was a distortion, and his vision actually changes quite markedly over the course of a day. this means that new glasses don't necessarily help. we have had opticians amazed at previous results, saying that someone must have got something wrong, but it can also be that it does change.
his neurologist said that parkinson's could affect eyesight, because brain function can also determine how you see. in that case, new glasses are going to help. it seems to me that there are times when his brainpower is just too stretched, and the quality of vision is affected. at the moment it seems more intermittent than progressive.
he still gets the distortion towards the end of the day, but botox treatment to keep his eyes open seems to have helped with this, too - tho i have no idea why.