Eye Anatomy

Cornea
This clear, dome-shaped structure on the surface of the eye acts as a window, letting light into the eye.

Iris
The colored part of the eye, called the iris, is a muscle surrounding the pupil that relaxes and contracts to control the amount of light entering the eye.

Pupil
The pupil is the round, central opening of the iris.

Lens
This is the structure inside the eye that helps to focus light on the retina.

Lens Capsule
This elastic bag envelops the lens, helping to control lens shape when the eye focuses on objects at different distances.

Zonules
Zonules are slender ligaments that attach the lens capsule to the inside of the eye, holding the lens in place.

Ciliary Body
This is the muscular area attached to the lens that contracts and relaxes to control the size of the lens for focusing.

Sclera
This tough, outermost layer of the eye maintains the shape of the eye.

Vitreous Gel
This large, gel-filled section is located towards the back of the eyeball, and helps to maintain the curvature of the eye.

Retina
The retina is a light-sensitive nerve layer in the back of the eye that receives light and converts it into signals to send to the brain.

Macula
This is the area in the back of the eye that contains functions for seeing fine detail.

Optic Nerve
The optic nerve connects and transmits signals from the eye to the brain.