Basic Eye Anatomy and Vision Terms

Front

Iris

Back

The colored part of the eye that controls the size of the pupil and thus the amount of light that enters the eye.

Front

Rod Cells

Back

Cells in the retina responsible for vision in low light conditions.

Front

Cone Cells

Back

Cells in the retina responsible for color

Front

Pupil

Back

The opening in the center of the iris that allows light to enter the eye.

Front

Retina

Back

The light-sensitive layer of tissue at the back of the inner eye

Front

Optic Nerve

Back

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

Front

Opaque

Back

Not allowing light to pass through; not transparent or translucent.

Front

Refraction

Back

The bending of light

Front

Photons

Back

Particles of light that are the basic units of light and all other forms of electromagnetic radiation.

Front

Translucent

Back

Allows some light to pass through