The term "Field of Vision" refers to the entire area that can be seen when a person looks straight ahead, without moving their eyes or head. This area includes everything visible in the peripheral vision, which is the ability to see objects outside of direct focus. The field of vision can vary among individuals and is influenced by factors such as eye health and age. In the context of optometry, the field of vision is often assessed during eye examinations to detect any issues that may affect a person's sight. A normal field of vision typically spans about 180 degrees horizontally and 130 degrees vertically. Understanding this concept is essential for activities like driving, where a wide field of vision is crucial for safety.