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Chapter 5

Medical Terminology from chapter 5

TermDefinition
blephar/o eyelid
cycl/o circle, ciliary body
dacry/o tear
ir/o iris, colored part of eye
ophthalm/o eye
phak/o lens (lentil)
retin/o retina
scler/o hard or sclera
phot/o light
vitre/o glassy
gt drops
IOL intraocular lens
LASIK laser-assisted in situ keratomileusis
choroid vascular layer beneath the sclera that provides nourishment to the outer portion of the retina
ciliary body ring of tissue behind the peripheral iris that is composed of ciliary muscle and ciliary processes
ciliary muscle smooth muscle portion of the ciliary body, which contracts to assist in near vision
Cornea transparent anterior portion of the outer covering of the eye
fovea centralis pinpoint depression in the center of the macula lutea that is the site of sharpest vision
fundus interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole (curvature at the back of the eye)
Zeis glands oil glands opening into the follicles of the eyelashes
iris colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil
lacrimal gland gland located in the upper outer region above the eyeball that secretes tears
lens the transparent structure behind the pupil that changes shape to help focus images on the retina
optic disc exit site of retinal nerve fibers as well as entrance point for retinal arteries and exit point for retinal veins
optic nerve nerve responsible for carrying impulses for the sense of sight from the retina to the brain
blepharospasm involuntary contraction of the muscles surrounding the eye causing uncontrolled blinking and lid squeezing
exophthalmos abnormal protrusion of one or both eyeballs; also spelled exophthalmos
iridectomy excision of a portion of iris tissue
cryoretinopexy use of intense cold to seal a hole or tear in the retina; used to treat retinal detachment
eye irrigation washing of the eye with water or other fluid (saline)
Created by: markiawllms
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