This study looks at how different people see obstacles while walking and compare it to how they actually perform. It includes young adults, older adults, and those with Parkinson's disease (PwP). *Parkinson's disease* is a brain disorder that affects movement. The study is happening at the University of Haifa and involves walking on different surfaces like floors and synthetic grass. Participants will wear special glasses to track eye movements to see how they look at the environment. They will also try to judge if they can safely cross obstacles before attempting it. This research hopes to find better ways to help people walk safely and avoid falls.

• The study involves walking tasks and eye-tracking at the University of Haifa.
• Participants need to be 20-80 years old and able to walk outside without help.
• The study may help create new ways to make walking safer for people with Parkinson's.