The Field of Vision
In order to understand how your eyes work, you should take time to learn about the many different components that make up human vision. The term "field of vision" (also called "field of view") refers to the full range of vision that a person observes at any given moment. Human beings have close to an 180-degree horizontal field of view, granted by our forward-facing eyes. In contrast, many birds have a complete 360-degree field of vision. The vertical range of a human being's field of vision is usually around 100 degrees.
How the Eye's Field of Vision ...





