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Seeing and Hearing

Veterinary Medical Terminology Chapter 14

QuestionAnswer
focusing refraction; the process of the lens bending the light rays to help tem focus on the retina
accommodation process of eye adjustments for seeing objects at various distances; accomplished through changes in lens shape
acuity sharpness or acuteness, usually used in reference to vision
convergence simultaneous inward movement of both eyes;
fove/o pit
lute/o yellow
macul/o spot
retin/o retina
retina the nervous tissue layer of the eye that receives images and lines the posterior chamber of the eye
optic disk region of the eye where nerve endings of the retina gather to form the optic nerve; also called the blind spot
vitreous humor soft, clear, jellylike mass that fills the vitreous chamber
aqueous humor anterior and posterior chambers of the eye are filled with this watery fluid
mydriasis pupillary dilation
lens clear, flexible, avascular, curved capsule located posterior to the iris and pupil
miosis pupillary constriction
pupil circular opening in the center of the iris
core/o and pupill/o pupil
phac/o lens of the eye
intraocular pressure; IOP test used to determine the resistance of the eyeball to indentation by an applied force
anis/o unequal
tonometry procedure using an instrument to measure intraocular pressure indirectly
pupillary light reflex; PLR response of pupil to light
palpebral reflex diagnostic test in which the eye should blink in response to touch at the medial canthus of the eye
menace response diagnostic test to detect vision in which movement is made toward the animal to test whether it will se movement and try to close it eyelids
ophthalmoscope instrument used for ophthalmoscopy
OD right eye
OS left eye
OU both eyes
AD right ear
AS left ear
AU both ears
periocular around the eyeball
palpebral pertaining to the eyelid
blephar/o eyelid
extrins/o contained outside
blephar/o eyelid
canthus the angle where the upper and lower eyelids meet
tars/o edge of the eyelid
Meibomian gland sebaceous glands on the margins of each eyelid
cilia eyelashes
conjuctiva mucous membrane that lines the underside of each eyelid
nictitating membrane conjuctival fold attached at the medial canthus that moves across the cornea when the eyelids close; third eyelid
lacrim/o and dacry/o teardrop, tear duct, or lacrimal duct
orb eyeball
sclera fibrous outer layer of the eye that maintains the shape of the eye;white of the eye
cornea anterior portion of thesclera that is transparent
corne/o and kerat/o cornea
opaque light cannot pass through
iris pigmented muscular diaphragm of the choroid that surrounds the pupil
orbit bony cavity of the skull that contains the eyeball
opt/i, opt/o, optic/o, ocul/o, and ophthalm/o eye or eye sight
adnexa accessory structures of an organ
cataract cloudines or opacity of thelens
distichiasis abnormal condition of a double row of eyelashes
cherry eye nictitating gland prolapse
stye hordeolum
epiphora excessive tear production
-tropia turning
eso- inward
exo- outward
audit/o, aud/i, ot/o ear
acoust/o and acous/o sound or hearing
auricle pinna
pinn/i external ear
aur/o and aur/i external ear
cerumen earwax
eardrum tympanic membrane
tympanic membrane tissue that separates the external ear from the middle ear/ sound waves reach the tympanic membrane then transmits sounds to the ossicles
tympan/o and myring/o eardrum
malleus hammer
incus anvil
stapes stirrup
auditory ossicles three little bones of the middle ear that transmit sound vibrations
otoscope instrument used to examine ears
aural hematoma collection or mass of blood on the outer ear
aural pertaining to the ear
ear pain
AD right ear
AS left ear
AU both ears
OD right eye
OS left eye
OU both eyes
Created by: spoitevint