Anatomy of the Eye Topic Guide
Anatomy and Physiology of the Eye: Even though the eye is small, only about 1 inch in diameter, it serves a very important function -- the sense of sight. Vision is by far the most used of the five senses and is one of the primary means that we use to gather information from our surroundings.
Eye Pain Eye pain has many causes, signs, symptoms, and treatments. It's also described as pain behind the eye, eye socket pain, or shooting pain in the eye. Headaches and sinusitis can be causes of eye pain.