Chapter 9 Eye and Ear Flashcards by Kaci Williams

choroid

middle layer of the eye containing many blood vessels

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cornea

transparent anterior part of the sclera that lies over the iris and pupil

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iris

pigmented muscular structure that regulates the amount of light entering the eye by controlling the size of the pupil

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lens

lies directly behind the pupil; focuses and bends light

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optic nerve

carries visual images from the retina to the brain

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pupil

opening through which light passes in the center of the iris

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retina

innermost layer of the eye; contains the vision receptors

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sclera

outer protective layer of the eye (also called the white of the eye)

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auricle (pinna)

external, visible part of the ear located on both sides of the head; directs sound waves to the external auditory canal

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cochlea

coiled portion of the inner ear that contains the organ for hearing

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eustachian tube

passage between the middle ear and the pharynx; equalizes air pressure on both sides of the tympanic membrane

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external auditory canal (meatus)

short tube ending at the tympanic membrane

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external ear

consists of the auricle and external auditory canal (meatus)

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inner ear (labyrinth)

bony spaces within the temporal bone of the skull that contain the cochlea, the semicircular canals, and vestibule. Cochlea facilitates hearing. semicircular canals and vestibule facilitate equilibrium and balance

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middle ear

consists of the tympanic membrane, Eustachian tube, and ossicles

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ossicles

bones of the middle ear (stapes, incus, and malleus) that carry sound vibrations

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tympanic membrane (eardrum)

semitransparent membrane that separates the external auditory canal (meatus) and the middle ear cavity; transmits sound vibrations to the ossicles

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blephar/o

eyelid

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ir/o, irid/o

iris

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kerat/o

cornea (also means hard, horny tissue)

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ophthalm/o

eye

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opt/o

vision

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retin/o

retina

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scler/o

sclera

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-metry

measurement

-plegia

paralysis

audi/o

hearing

myring/o

eardrum (tympanic membrane)

ot/o

ear

tympan/o

middle ear

-ptosis

drooping, sagging, prolapse

laryng/o

larynx (voice box)

blepharitis

inflammation of the eyelid

blepharoplasty

surgical repair of the eyelid

blepharoptosis

drooping of the eyelid (also called ptosis)

keratometer

instrument used to measure (the curvature of) the cornea (also called ophthalmometer)

keratoplasty

surgical repair of the cornea

ophthalmic

pertaining to the eye

ophthalmologist

physician who studies and treats diseases of the eye

ophthalmology

study of the eye

ophthalmoscope

instrument used for visual examination of the eye

optic

pertaining to vision

optometry

measurement of vision

retinal

pertaining to the retina

retinitis

inflammation of the retina

scleral

pertaining to the sclera

scleritis

inflammation of the sclera

audiologist

specialist who studies and treats (impaired) hearing

audiology

study of hearing

audiometer

instrument used to measure hearing

audiometry

measurement of hearing

myringitis

inflammation of the eardrum

myringoplasty

surgical repair of the eardrum

myringotomy

incision into the eardrum

otitis

inflammation of the ear

otoplasty

surgical repair of the (outer) ear

otolaryngologist (ENT)

physician who studies and treats the diseases fo the ear, (nose), and the larynx (throat)

otolaryngology

study of the ear, (nose), and the larynx (throat)

otorrhea

discharge from the ear

otoscope

instrument used for visual examination of the ear

tympanic

pertaining to the middle ear

tympanoplasty

surgical repair of the middle ear

astigmatism (AST)

irregular curvature of the refractive surfaces of the eye (cornea or lens); causes blurry vision

cataract

clouding of the lens of the eye

glaucoma

eye disorder characterized by optic nerve damage usually caused by the abnormal increase of intraocular pressure

hyperopia

farsightedness

LASIK

laser procedure that reshapes the corneal tissue beneath the surface of the cornea; laser-assisted in situ keratomileusis

macular degeneration; when caused by the aging process it is referred to as age-related macular degeneration (ARMD)

progressive deterioration of the central portion of the retina resulting in a loss of central vision;

myopia

nearsightedness

optometrist

healthcare professional who performs eye exams, administers vision tests, and prescribes corrective lenses. Optometrists are state-licensed healthcare professionals who have earned doctorate degrees (OD)

otitis media

inflammation of the middle ear

presbycusis

hearing impairment occurring with age

presbyopia

vision impairment occurring with age

retinal detachment

separation f the retina from the choroid in the posterior portion of the eye resulting in a disruption of vision that may be permanent if treatment is delayed; onset may be gradual or sudden and is not painful

tinnitus

ringing in the ears

ARMD

age-related macular degeneration

AST

astigmatism

ENT

ear nose and throat; otolaryngologist

HOH

hard of hearing

IOP

intraocular pressure

otitis media

Ophth

ophthalmology

visual acuity