Physiology of Vision

Front

What is the function of the cornea in the eye?

Back

The cornea changes the direction of light rays as they enter the eye, helping to focus light onto the retina.

Front

What is the role of the sclera?

Back

The sclera protects the interior components of the eye from injury and makes up the exterior of the eye.

Front

What does the ciliary body do?

Back

The ciliary body changes the shape of the lens when the eye focuses and produces the clear fluid that fills the space between the cornea and the iris.

Front

How does the iris function in vision?

Back

The iris regulates the amount of light entering the eye and helps focus light rays on the retina.

Front

What is the purpose of the lens in the eye?

Back

The lens focuses light rays that pass through it and changes the focal distance of the eye.

Front

Define the retina.

Back

The retina is the light-sensitive layer at the back of the eye that converts light into neural signals for the brain.

Front

What is the role of the optic nerve?

Back

The optic nerve transmits visual information from the retina to the brain.

Front

Explain the function of the vitreous humor.

Back

The vitreous humor is a clear gel that fills the space between the lens and the retina, helping to maintain the eye's shape.

Front

What is the macula?

Back

The macula is a small area on the retina responsible for sharp central vision.

Front

What is the function of the choroid?

Back

The choroid is a layer of blood vessels between the retina and sclera that provides nutrients and oxygen to the eye.