PSP stands for. Progressive Supranuclear Palsy. My eyes are very sensitive to light and I have difficulty looking up and down. My balance is bad.
I too have dry eyes...I use Systane eye drops morning and night. The Dr. said the normal person blinks 16-18 times per minute, whereas a person with Parkinson's my only blink 3=5 times per minute.
That sounds like eye distonia talk to your specialist.
PD may produce dry eye syndrome related to poor closing and opening of eyes ,blinking. Restasijs or cegua
May help you
I have trouble with my eyes too. I asked several doctors about it, but didn’t get any answers. Thank you.