Problems & Conditions

Problems & Conditions

Conjunctiva

The thin, moist tissue that lines the eyelid’s inner surface, the conjunctiva helps protect the eye and prevents it from drying out.

Cornea

The eye’s front surface, the cornea covers the iris, pupil, and anterior chamber and is responsible for 70 percent of total focusing ability.

Iris

Located behind the cornea, the iris is the colored part of the eye and contains the pupil. The iris adjusts the size of the pupil to control the amount of light entering the eye.

Lens

Located behind the pupil, the lens focuses light on the retina.

Optic nerve

The optic nerve transports visual signals from the retina in the back of the eye to your brain. It is made up of anywhere from more than three-quarters of a million to more than a million nerve fibers.

Pupil

The black circle within the eye’s iris, the pupil controls how much light enters the eye by opening in darkness and closing as light increases.

Retina

Located at the back of the eye, the retina receives images from the cornea and the lens and contains light-sensitive cells, called photoreceptors. There are two types of photoreceptors – rods and cones. Rods are more light sensitive while cones are more color sensitive.