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MMTC MedTerm Ch10/11

Miller Motter Medical Terminology Ch10-11 (revised)

pupil black,circular opening in the center of the iris through which light passes as it enters the eye.
sclera tough fibrous, white outer coat extending from the cornea to the optic nerve.
vitreous jelly-like mass filling the inner chamber b/w the lens and retina that gives bulk to the eye.
diplopia double vision
exopthalmus or exopthalmos abnormal protrusion of one or both eyeballs
lacrimation secretion of tears
nystagmus involuntary, rapid, oscillating movement of the eyeball
photophobia extreme sensitivity to, and discomfort from, life
scotoma blind spot in vision
astigmatism distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents the light rays from coming to a single focus on the retina
hyperopia farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina
myopia nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina
presbyopia impaired vision caused by old age or loss of accomodation
pterygium fibrous, wing-shaped growth of conjunctival tissue that extends onto the cornea, developing most commonly from prolonged exposure to ultraviolet light
strabismus a condition of eye misalignment caused by intraocular muscle imbalance
enuclation excision of the eyeball
iridectomy excision of a portion of an iris
intraocular lens(IOL)implant implantation of an artificial lens to replace a defective natural lens
mydriatic agent that causes dialation of the pupil; used for certain eye examinations
miotic agent that causes the pupil to contract
air or gas aer/o
deafness general term for partial or complete loss of hearing
presbyacusis hearing impairment in old age
audiologist health professional who specializes in the study of hearing impairments
otoscopy use of an otoscope to examine the external auditory canal and tympanic membrane
myringotomy incision into the eardrum, most often for insertion of a small polyethylene (PE) tube to keep the canal open and prevent fluid buildup, such as occurs in otitis media
otoplasty surgical repair of the external ear
irrigation of the external ear canal, often to remove excessive buildup of cerumen ear lavage
myringitis inflammation of an eardrum
vertigo a turning around; dizziness
tinnitus a jingling; ringing or buzzing in the ear
otorrhea purulent drainage from the ear
otorrhagia bleeding from the ear
otalgia, otodynia earache
stapes stirrup; last of the three auditory ossicles of the middle ear
incus anvil; middle of the three auditory ossicles of the middle ear
malleus hammer; first of the three auditory ossicles of the middle ear
tympanic membrane eardrum; drum-like structure that receives sound collected in the external auditory canal and amplifies it through the middle ear
auricle pinna(little ear) projected part of the middle ear
external ear outer structures of the ear that collect sound
-acusis hearing condition
tympan/o, myring/o eardrum
salping/o eustachian tube, or uterine tube
cerumin/o wax
aur/i, ot/o ear
acusi/o, audi/o hearing
aque/o water
blephar/o eyelid
conjunctiv/o conjunctiva
cycl/o circle, cilliary body
corne/o, kerat/o cornea
ir/o irid/o colored circle, iris
lacrim/o dacry/o tear
ocul/o, opthalm/o, opt/o eye
phac/o, phak/o lens, lentil
phot/o light
presby/o old age
retin/o retina
scler/o hard or sclera
vitre/o glassy
-opia condition of vision
aqueous humor watery liquid secreted by the ciliary processes that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens
conjunctiva mucous membrane that lines the eyelids and outer surface of the eyeball
cornea transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image
eyelid movable, protective fold that opens and closes, covering the eye
fovea centralis pinpoint depression in the center of the macula lutea that is the site of sharpest vision
iris colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil
lacrimal ducts tubes that carry tears to the lacrimal sac
lens transparent structure behind the pupil that bends and focuses light rays on the retina
macula lutea central region of the retina; responsible for central vision; yellow pigment provides its color
nasolacrimal duct passageway for tears from the lacrimal sac into the nose
optic disk 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
chalazion chronic nodular inflammation of a meibomian gland, usually the result of a blocked duct; commonly presents as a swelling on the upper or lower eyelid
cataract opaque clouding of the lens causing decreased vision
blepharptosis drooping of the eyelid; usually caused by paralysis
glaucoma glaw-kō′mă (Fig. 10-6, D) group of diseases of the eye characterized by increased intraocular pressure that results in damage to the optic nerve, producing defects in vision
hordeolum sty; an acute infection of a sebaceous gland of the eyelid
Created by: evinsmc