Various parts of the eye work together to catch, focus and process light to make vision possible. When the eye is open, light first passes through the cornea, the eye's transparent outer windshield. The cornea takes a wide spectrum of light and bends it through the pupil, a round opening in the iris, or colored part of the eye.

Directly behind the pupil is the eye's natural lens. It fine focuses the light directly onto the retina, a photosensitive membrane that lines the back of the eye. The retina then changes the light spectrum into electrical impulses and sends them through the optic nerve to the processing center of the brain where vision is interpreted.

The visual system is vulnerable to many types of disruption, such as:

Focal Problems

Glaucoma

Retinal Disease