Alan: :Dr.Duvoisin mentions "a diminished response to an impending fall" which I feel describes the situation as I have felt from the beginning 12 years ago. I wouldn't realize what happened untilI was on the ground wondering what happened. AsI have mentionedhere before,for the last thee years I havebeen walkingthe straight line between the lanes at the swimming pool, backwardand forward. Frequently Itend to lose my balancee,but somehow I have managed to jerk or move suddenly backward arms akimbo and keep my balance. Of course the bouyancy effectof the water helps. Recently,I have managed to prevent a fall instinctively, it seems, when I thought for certain I was going down . I have tried to explain this on other occasions, ... I just think perhaps I must have recovered the instinct to respond. Not 100%, mind you, but somewhat. As to the vision problem, I am also baffled. I do not drive, but sail a small boat. In the current issue of PARKINSON REPORT vol.XVI issue IV : NPF,Inc, Miami,FLA in the article, "Visual Disturbances in Parkinson's Disease" the authors delineate "contrast sensitivity" in PD. It is well worht looking into. EGO BRUISE in PD I will not discuss just now,thank you ! ! mehmoirs (Mary Manfredi)