Parts of the Eye Definitions

Front transparent membrane that refracts light to pass through the pupil.

• Iris

• Lens

• Cornea

• Cones

The passage created by the iris to allow light to enter the eye.

• Pupil

• Rods

• Optic Nerve

• Iris

The muscle that controls the size of the pupil.

• Lens

• Iris

• Cornea

• Retina

Transparent part within the eye that focuses the image on the retina.

• Lens

• Rods

• Cones

• Retina

Light sensitive tissue detects light and sends signals to the brain.

• Optic Nerve

• Lens

• Cones

• Retina

Very sensitive cells that detect dim light and allow black and white vision.

• Retina

• Cones

• Rods

• Optic Nerve

Cells that detect bright light and color.

• Rods

• Retnia

• Cornea

• Cones

The pathway by which signals are sent from the eye to the brain.

• Optic Nerve

• Cone

• Rod

• Pupil