The iris is the colored part of the eye that controls the amount of light that enters into the eye. The eye is surrounded by the orbital bones and is cushioned by pads of fat within the orbital socket.
Anatomy Of The Eye
The episclera is covered by the conjunctiva a vascular mucous membrane.
External anatomy of the eye. Nerve signals that contain visual information are transmitted through the optic nerve to the brain. 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 human eye ball is spherical in structure and is about 24 mm in a diameter.
It is the most visible part of the eye. The diaphragm that controls the amount of light entering 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.
Human eye parts 1. It has two layers a posterior pigment epithelium and an anterior stroma made of collagen muscle and pigment cells. Squinting which is closing the eye partially sheilds the eye from excessive light that can damage the internal structure such as the retina.
The lens then changes shape to allow the accurate focusing of light on the retina. It lies in front of the crystalline lens and separates the anterior chamber from the posterior chamber. It is the most visible part of the eye.
The outer margin of the cornea. Overview the cornea allows light to enter 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. The structure of the human eye is made of three layers. The outer fibrous or sclera 2.
Anatomy of the eye. Component of the lacrimal apparatus tears enter thru lacrimal punctum. 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.
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