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Tuesday, May 10, 2011

Anatomy of the eye

 

 

eye :

One of the most precious organ in human body . the eyelid and bony orbit act as a protective barrier . let’s take a small overview about the eye ball.

it consist of …..

03

conjunctiva:

A transparent sheet surround the eye ball back of the eyelids up & down, fornixes lateral and medial.

cornea:

A transparent part, one of the most important mechanism in the clarity and good vision.

sclera:

Whitish part surround eyelid, consist mainly from collagenous, fibrosis tissues to protect inner parts of the eye.

iris:

The color part which   the color of the eye it was usually genetically dependence usually the infant born with grayish color then change this color during first year of the life.

lens:

A transparent elastic organ it form with the cornea a good refractive system to  see clear from different distance.

retina:

A transparent, it receive the light convert it to electrical sight go through optic nerve to cerebral cortex.

choroid:

Vascular layer between sclera, retina it mainly give the blood supply to inner part of the eye.

Aqueous , vitreous:

Occupied anterior , posterior chamber they keep the pressure , shape of the eye.

Ciliary Body:

It responsible for  aqueous formation and movement of the lens zonules.

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