Retina

Definition

The retina is the innermost layer of the eye that contains specialized cells called photoreceptors, which detect light and convert it into electrical signals to be sent to the brain for visual processing.

Related terms

Optic Nerve:

The optic nerve is a bundle of nerve fibers that carries visual information from the retina to the brain.

Rods:

Rods are photoreceptor cells in the retina that are responsible for detecting black, white, and shades of gray. They are highly sensitive to dim light conditions.

Cones:

Cones are photoreceptor cells in the retina that are responsible for color vision and visual acuity. They work best under bright light conditions.