Eye Anatomy External

The outer fibrous or sclera 2. The iris is the colored part of the eye that controls the amount of light that enters into the eye.

Eye Anatomy And Vision Course Hero

The eyelids or thin folds of skin that coverand protect the cornea and conjunctiva from chemical or physical activity.

Eye anatomy external. Much less important than the lower punctum. The external structure of the eye. Oval opening in the upper lid margin where tears enter to flow to the lacrimal sac.

This includes the eyelids. The eye is surrounded by the orbital bones and is cushioned by pads of fat within the orbital socket. Lacrimal system tear drainage system the lacrimal system is crucial for tear production and management which includes distribution of tears and draining excess tears.

Extraocular muscles help move the eye in different directions. The human eye ball is spherical in structure and is about 24 mm in a diameter. Malfunction in any part of the system can cause serious complications.

Click on a label to display the definition. Nerve signals that contain visual information are transmitted through the optic nerve to the brain. Human eye parts 1.

It lies in front of the crystalline lens and separates the anterior chamber from the posterior chamber. Tap on the image or pinch out and pinch in to resize the image. The structure of the human eye is made of three layers.

Medlineplus medical encyclopedia image. As light passes through the eye the iris changes shape by expanding and letting more light through or constricting and letting less light through to change pupil external and internal eye anatomy. Anatomy of the eye.

It is the most visible part of the eye. Two activities happen to protect the eye. The iris is part of the uveal tractthe middle layer of the wall of the eye.

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