Use Sophia to knock out your gen-ed requirements quickly and affordably. Learn more
×

Vision

Author: Amanda Soderlind

Source: Human Eye; Public Domain: http://bit.ly/SewUbU VIDEO AND IMAGES CREATED BY AMANDA SODERLIND

Video Transcript
Terms to Know
Aqueous Humor

Fluid within the eyeball (between the cornea and lens) that maintains pressure and transmits light.

Cone Cell

A photoreceptor cell that detects bright light and color.

Cornea

A layer that covers the iris and helps to focus light into the eye.

Fovea

An area of the retina where vision is the most acute.

Iris

The colored portion of the eye.

Lens

A structure in the eye that focuses light to the retina.

Optic Nerve

A nerve that sends impulses to the visual cortex in the brain where images are interpreted.

Photoreceptor

A sensory receptor that detects visible light.

Pupil

The black part of the eye through which light enters.

Retina

An area in the back of the eye that contains photoreceptors to absorb light.

Rod Cell

A photoreceptor cell that detects dim light.

Sclera

The white of the eye that aids in protection.

Vision

The perception of light, images, and movement by the eye.

Visual Cortex

The part of the brain that receives nerve impulses from the optic nerve.

Vitreous Humor

Fluid within the eyeball (between the lens and the retina) that supports the lens and the eyeball.