Anatomy of the Eye

Front

What is the conjunctiva?

Back

A thin, clear, colorless mucous membrane that covers the entire eye and provides protection.

Front

What is the sclera?

Back

The white part of the eye that maintains eye shape and protects the eye.

Front

What is the cornea?

Back

The clear, anterior portion of the sclera that protects the iris and pupil and provides most of the optical power of the eye.

Front

What is the choroid?

Back

A blood-rich coating of the eyeball that provides nourishment to the eye.

Front

What is the function of the pupil?

Back

It controls the light entering inside the eye.

Front

What is the iris?

Back

A muscular layer that surrounds the pupil to constrict or dilate the pupil.

Front

What is the lens?

Back

A clear, curved, flexible structure that focuses images on the retina.

Front

What is the ciliary body?

Back

Composed of the ciliary muscle and suspensory ligaments, it adjusts the shape of the lens to help focus on objects.

Front

What is the aqueous humor?

Back

It cleanses the eye, provides nutrients to the cornea and lens, and holds the shape of the anterior eye.

Front

What is the vitreous humor?

Back

A gel-like fluid that holds the retina in place.