CHAPTER_TWELVE - CHAPTER 12 THE EYE The eyes are organs of...

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CHAPTER 12 THE EYE The eyes are organs of vision and are located in a bony protective cavity of the skull called the orbit . Only a small portion of the eye is visible from the exterior. STRUCTURES OF THE EYE STRUCTURE DEFINITION sclera outer protective layer of the eye, anteriorly referred to as the white of the eye cornea transparent anterior part of the sclera, which is in front of the aqueous humor and lies over the iris choroid middle layer of the eye, which is interlaced with many blood vessels iris the pigmented muscular structure that allows light to pass through pupil opening in the center of the iris lens lies directly behind the pupil. Its function is to focus and bend light. retina innermost layer of the eye, which contains the vision receptors aqueous humor watery liquid found in the anterior cavity of the eye vitreous humor jelly-like substance found behind the lens in the posterior cavity of the eye that maintains its shape meibomian glands oil glands found in the upper and lower edges of the eyelids that help lubricate the eye lacrimal glands and ducts produce and drain tears optic nerve carries visual impulses from the retina to the brain conjunctiva mucous membrane lining the eyelids and covering the anterior portion of the sclera 1
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PREFIXES AND SUFFIXES PREFIX DEFINITION bi, bin two SUFFIX DEFINITION -opia vision (conditions) -phobia abnormal fear of or aversion to specific things -plegia paralysis 2
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COMBINING FORMS FOR THE EYE COMBINING FORM DEFINITION blephar/o eyelid conjunctiv/o conjunctiva cor/o, core/o, pupill/o pupil corne/o, kerat/o cornea dacry/o, lacrim/o tear, tear duct irid/o, iri/o iris ocul/o, ophthalm/o eye opt/o vision retin/o retina scler/o sclera COMBINING FORMS COMMONLY USED WITH THE EYE COMBINING FORM DEFINITION cry/o cold dipl/o two/double phot/o light ton/o tension, pressure DISEASE AND DISORDER TERMS BUILT FROM WORD PARTS TERM DEFINITION blepharitis inflammation of the eyelid blepharoptosis
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This note was uploaded on 11/22/2010 for the course HSC 2531 taught by Professor Chancey during the Spring '10 term at Santa Fe College.

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CHAPTER_TWELVE - CHAPTER 12 THE EYE The eyes are organs of...

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