Chapter 17
scotoma
a blind spot; area of depressed vision surrounded by an area of normal vision
strabismus
abnormal deviation of the eye
aphakia
absence of the lens of the eye
hemianopsia
absence of the vision in half of the visual field
accomodation
adjustment of the lens by the ciliary body
eustachian tube
channel between the middle ear and the nasopharynx
pupil
dark center of the eye through which light rays enter
amblyopia
dim vision
ENT
ears, nose, and throat
glaucoma
increased intraocular pressure
aqueous humor
secreted by ciliary body
sclera
tough white outer coat of the eyeball
lens
transparent body behind the iris and in front of the vitreous humor that refracts light rays to bring them into focus on the retina
lens
transparent structure, biconvex, focuses light on retina
otoscopy
visual examination of the ear
scotoma
blind spot
dacryorrhea
excessive secretion of tears
ciliary body
muscular layer of the eye
tympanic membrane
myring/o
ophthalmologist
physician who treats eye diseases
macula lutea
yellowish region in the retina; contains the fovea centralis
macula lutea
yellowish region on the retina lateral to the optic disc
perilymph and endolymph
auditory fluids
suppurative otitis media
bacterial infection of the middle ear
refraction
bending of the light rays by the cornea, lens, and eye fluids
acoustic neuroma
benign tumor in the brain
AU
both ears
cataract
clouding of the lens
cataract
clouding of the lens causing decreased vision
cholesteatoma
collection of skin cells and cholesterol in the middle ear
iris
colored portion of the eye that surrounds the pupil
cycl/o
combining form for the ciliary body
kerat/o
combining form for the cornea
xerophthalmia
condition of dry eyes
ciliary body
contains muscles that control the shape of the lens and secretes aqueous humor
retina
contains sensitive cells (cones, rods) that transmit light energy to nerve impulses
presbycusis
deafness due to old age
presbyopia
decreased vision due to age
astigmatism
defective curvature of the cornea or lens
conjunctiva
delicate membrane lining the eyelids and covering the anterior eyeball
macular degeneration
deterioration of the macula
vertigo
dizzy sensation
diplopia
double vision
cerumen
ear wax
tympanic membranes
eardrums
conjunctivitis
eye inflammation commonly called "pink eye"
EENT
eye, ears, nose, and throat
hyperopia
farsightedness
cornea
fibrous layer of clear tissue
cornea
fibrous layer of clear tissue that extends over the anterior portion of the eye and is continuous with the white of the eye
cornea
fibrous layer of the clear tissue that extends over the anterior portion of the eyeball
papilledema
fluid accumulation in the back of the eye
otomycosis
fungal infection of the ear
tonometry
glaucoma is primarily diagnosed by
otosclerosis
hardening of the bony tissue
presbyopia
impairment of vision due to old age
glaucoma
increased intraocular pressure results in retinal and optic nerve damage
blepharitis
inflammation of eyelid
conjunctivitis
inflammation of the conjunctiva
keratitis
inflammation of the cornea
myringitis
inflammation of the eardrum
blepharitis
inflammation of the eyelid
labyrinthitis
inflammation of the inner ear
iritis
inflammation of the iris
mastoiditis
inflammation of the mastoid bone
otitis media
inflammation of the middle ear
suppurative otitis media
inflammation of the middle ear with infection
uveitis
inflammation of the vascular layer of the eye
meniere's disease
inner ear disorder
audiometer
instrument to measure hearing
esotropia
inward deviation of the eye
vitreous humor
jelly-like material behind the lens that helps to maintain its shape
semicircular canals
labyrinth
AS
left ear
hordeolum
localized purulent infection of sebaceous gland of the eye
eyelid
meaning of palpebr/o
conjunctiva
membrane surrounding the eye and eyelid
myopia
nearsightedness
presbycusis
nerve deafness occurring with age
accomodation
normal adjustment of the lens to bring an object into focus
emmetropia
normal vision
exotropia
outward deviation of the eye
intraocular
pertaining to within the eye
rods
photosensitive receptor cells that make vision in dim light possible
cones
photosensitivity receptor cells of the retina; make the perception of color possible
cones
photosenstive receptor cells in the retina that make color perception
transmission of sound waves
pinna, external auditory canal, tympanic membrane, malleus, incus, stapes, oval window, cochlea, auditory liquids, auditory nerve fibers, cerebral cortex
optic chiasm
place where optic nerve fibers cross in the brain
loss of central vision
produced by macular degeneration
PERRLA
pupil equal round reactive to light and accomodation
anisocoria
pupils are unequal in size
anisocoria
pupils unequal in size
optic disc
region at the back of eye where the retina meets the optic nerve
stapedectomy
removal of the third bone in the middle ear
diabetic retinopathy
retinal aneurysm, hemorrhages, secondary to endocrine vision
AD
right ear
tinnitus
ringing sound in the ear
tinnitus
ringing sound in the ears
photophobia
sensitivity to light
chalazion
small hard mass on the eyelid;formed from a sebaceous gland enlargement
cochlea
snail-shaped, spirally wound tube in the inner ear
tympanoplasty
surgical repair of the eardrum
choroid
vascular layer of the eyeball that is continuous with the iris