External Anatomy Of The Eye
It is the most visible part of the eye. The outer margin of the cornea.
It lies in front of the crystalline lens and separates the anterior chamber from the posterior chamber.
External anatomy of the eye. The outer fibrous or sclera 2. Extraocular muscles help move the eye in different directions. The diaphragm that controls the amount of light entering the eye.
It is the most visible part of the eye. Malfunction in any part of the system can cause serious complications. Component of the lacrimal apparatus located superior and lateral to each eye.
Nerve signals that contain visual information are transmitted through the optic nerve to the brain. Overview the cornea allows light to enter the eye. Human eye parts 1.
The iris is the colored part of the eye that controls the amount of light that enters into the eye. Squinting which is closing the eye partially sheilds the eye from excessive light that can damage the internal structure such as the retina. Anatomy of the eye.
Blinking on the other hand which is closing and opening the eye rapidly spreads tears across and and removes irritants from the cornea and conjuctiva. Component of the lacrimal apparatus tears enter thru lacrimal punctum. The structure of the human eye is made of three layers.
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 size. The episclera is covered by the conjunctiva a vascular mucous membrane. The human eye ball is spherical in structure and is about 24 mm in a diameter.
Lacrimal system tear drainage system the lacrimal system is crucial for tear production and management which includes distribution of tears and draining excess tears. The eye is surrounded by the orbital bones and is cushioned by pads of fat within the orbital socket. The lens then changes shape to allow the accurate focusing of light on the retina.
It has two layers a posterior pigment epithelium and an anterior stroma made of collagen muscle and pigment cells.
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