Question | Answer |
accommodation | changes that occur in the ocular lens when it focuses at various distances |
acoustic nerve | cranial nerve that controls the senses of hearing & equilibrium |
aqueous humor | fluid found in the anterios cavity of eye |
auditory canal | 1-in segment of tube that extends from the external ear to the middle ear |
auditory ossicles | set of three small bony structures in the middle ear |
cataract | loss of transparency of the lens of the eye |
central vision | what is seen when you look straight ahead or read |
cerumen | wax-like substance secreated by motified sweat glands in the ear |
cochlea | portion of inner ear involved in hearing |
conductive hearing loss | cause by abnormalaties of the outer or middle ear that interfere with the transmission of sound |
cones | photoreceptors in the retina of the eye responsible for color preception |
conjuctiva | transparent protective mucous membrane that lines the underside of the eye lid |
cornea | clear part of eye located in the front of the iris |
equilibrium | steadiness or balance & knowing where the body is in realtion to its surroundings |
eustachian tube | tubular structure in the middle of the ear, equilizes pressure |
glaucoma, open angle | sudden increase in intraocular pressure, due to obstruction of the drainage portal |
glaucoma, angle closure | elevated pressure in the eye |
intraocular pressure | inner pressure of the eye |
iris | colored part of the eye |
keratotomy | incision of the cornea to correct myopia |
labyrinth | bony structure in the inner ear, three parts involved in balance |
lacrimal apparatus | structures that keep the surface of the eye moistened with tears |
lens | flexible clear covering of the retina |
macula lutea | yellow spot in the center of the retina |
meniere's disease | chronic inner ear disease from build up of fluid in the inner ear |
miosis | contraction of the pupil |
mydriasis | dilation of the pupil |
ophthalmic | pertaining to the eye |
optic disc | ocular end of the optic nerve where retina nerve fibers from the eye exit & blood vessels enter the eye |
orbit | eye socket |
otic | pertaining to the ear |
otitis | inflammation of the ear |
otitis media | infection of the middle ear |
otoliths | calcium carbonate crystals found in inner ear |
otosclerosis | hardening of the bones in the middle ear |
ototoxicity | damage or toxicity to the ear |
peripheral vision | "side vision" |
presbycusis | bilateral hearing loss linked to aging, accompanied by tinnitus |
pupil | circular opening in the iris that allows light to enter |
retina | innermost layer of the eye |
rods | photoreceptors in the retina of the eye that are responsible for night vision |
saccule | saclike inner ear structure that senses verical motion of the head |
sclera | white of the eyes |
tannitus | ringing of the ears, squeaking crackling whistling noise |
tononmetry | use of a device to measure pressure in the eye |
trabecular meshwork | small opening around the outer edge of iris |
tympanic membrane | the eardrum |
utricle | saclike inner ear structure for sensing forward, backward side to side motion of the head |
veritgo | feeling of spinning space |
viterous humor | gel-like substance that fills the posterior cavity of the eye |