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Chapter 11
Term | Definition |
---|---|
Eustachian Tubes | help drain ears and regulate the pressure in the ear |
Vertigo | whirling, dizziness, or loss of balance often accompanied by nausea or vomiting |
Presbycussis | progressive nerve deafness associated with aging |
Tinnitus | ringing or buzzing sound in one or both ears |
Acoustic Nerves | connected to the cochlea to pass electrical signals |
cochlea | collects sound waves and transmit vibrations to electrical impulses |
Tarsorrhaphy | suturing together the upper and lower eyelids to protect the eye when the lids are paralyzed or unable to close properly |
Conjunctivitis | inflammation of the conjunctive usually caused by an allergy or infection |
Dacryoadenitis | Inflammation of the lacrimal gland due to bacterial, viral or fungal infections |
Equilibrium | balance |
AD (auris dexter) | right ear |
AS (auris sinister) | left ear |
AU (auris uterque) | both ears |
Amblyopia | dimness of vision or partial loss of sight, usually one eye, without any detectable diseases |
Auditory Ossicles | tiny ear bones |
Adnexa | accessory structures outside the eyeball such as orbit, eye muscles, eyelids, and eyelashes |
OU (oculus uterque) | both eyes |
OS (oculus sinister) | left eye |
OD (oculus dexter) | right eye |
tympan/o | tympanic membrane/ eardrum |
trop/o | turn, change |
scler/o | sclera, white of eye, hard |
presby/o | old age |
-opia | vision condition |
ophthalm/o | eye, vision |
myring/o | tympanic membrane/ eardrum |
kerat/o | horny, hard, cornea |
-cusis | hearing |
blephar/o | eyelid |
labrinth/o | inner ear |
pinn/i | outer ear |
retin/o | retina |
phac/o, phak/o | lens |
ir/i, ir/o, irid/o, irit/o | iris |
Strabismus | the eyes pointing in different directions due to the ocular muscle not being able tofocus together |
Presbyopia | common changes in the eyes that occur with aging |
Nystagmus | involuntary, constant, rhythmic movement of the eye |
Myopia | A defect in which light rays focus in front of the retina (nearsightedness) |
Hyperopia | a defect in which light rays focus beyond the retina (farsightedness) |
Hemianopia | blindness of one half of the field of vision |
Exotropia | outward deviation of one or both eyes |
Esotropia | inward deviation of one or both eyes (cross-eyed) |
Diplopia | perception of two images of a single object (double vision) |
Astigmatism | the eye does not focus properly due to an uneven curvature of the cornea |
acous/o, acoust/o, audit/o, ot/o | ears |
dacryocst/o, larim/o | lacrimal apparatus |
opt/i, opt/o, optic/o, ophthalm/o | eyes |