This study focuses on Parkinson's disease (PD), a common brain disorder known for causing movement issues, but also affecting vision. Researchers aim to understand the vision problems in PD patients and test exercises that might help improve their sight. Initially, simple tests will be done to assess vision, like checking how clearly one can see, eye movement, and color recognition. Later, selected PD patients will do visual exercises using easy tools or apps. Finally, the study will evaluate if these exercises helped, by comparing with those who didn’t do them.

• Participation: Involves non-invasive tests and some visual exercises.
• Location: Conducted at University of Valencia, Arnau de Vilanova Hospital, and Parkinson's Association of Valencia.
• Eligibility: Includes PD patients and healthy individuals without certain diseases or medications.

This study is voluntary, and participants can withdraw at any time. No personal benefits are provided, but the findings could help improve life quality for many PD patients. Data privacy is ensured with secure handling and coded identification.