Complex Eye Movements in Parkinson's Disease and Related Movement Disorders

"Subjects will undergo a complex eye exam which will capture fixation, optokinetic nystagmus, guided saccades, microsaccades, smooth pursuit, and pupillometry.~Eye tracking equipment will be set and calibrated to the participant who will then perform the full 10 minute testing protocol with instructions from the investigator. After this, they will take a five minute break. The oculomotor testing protocol will be repeated twice."