Chapter17 Flashcards
Accommodation
Normal adjustment of the eye to focus on objects from far to near.
Anterior Chamber
Area behind the cornea and in front of the lens and iris. It contain aqueous humor.
Aqueous Humor
Fluid produced by the ciliary body and found in the anterior chamber.a humor is any body fluid, including blood and lymph.
Conjunctiva
Delicate membrane lining the eyelids and covering the eyeball.
Optic disc
Region at the back of the eye where the optic nerve meets the retina. It is the blind spot of the eye because it contains only nerve fibers, no rods or cones, and is thus insensitive to light.
Vitreous Humor
Soft, jelly-like material behind the lens in the vitreous chamber; helps maintain the shape of the eyeball.
Aque/o
Water
Blephar/o
Eyelid
Conjunctiv/o
Conjunctiva
Cor/o
Pupil
Anis/o
Unequal
Corne/o
Cornea
Cycl/o
Ciliary body or muscle of the eye
Dacry/o
Tears, tear duct
Ir/o
Irid/o
Iris (colored portion of the eye around the pupil)
Kerat/o
Cornea
Lacrim/o
Tears
Ocul/o
Eye
Ophthalm/o
Eye
Opt/o
Optic/o
Eye, vision
Vision condition
Palpebr/o
Eyelid
Papill/o
Optic disc; nipple-like
Phac/o
Phak/o
Lens of the eye
Pupil/o
Pupil
Retin/o
Retina
Scler/o
Sclera (white of the eye); hard
Uve/o
Urea; vascular layer of the eye (iris, ciliary body and choroid)
Vitre/o
Glassy
Ambly/o *
Dull, dim
-opia
Vision, vision condition
Dipl/o
Double
Glauc/o
Gray
Mi/o
Smaller, less
-oma
Mass or collection of fluid
Mydr/o *
Widen, enlarge
Nyct/o
Night
-opsia
Vision, vision condition
Phot/o
Light
Presby/o *
Old age
Scot/o
Darkness
Xer/o
Dry
-tropia
To turn
Eso-
Inward
Exotropia
Outward turning of eye.
Astigmatism
Defective curvature of the cornea or lens of the eye.
Hyperopia
Hypermetropia
Farsightedness.
Myopia
Nearsightedness.
Presbyopia
Impairment of vision as a result of old age.
Cataract
Clouding of the lens, causing decreased vision.
Chalazion
Kà-LA-zē-ōnz
Small, hard, cystic mass (granuloma) on the eyelid.
Diabetic Retinopathy
Retinal effects of diabetes mellitus include micro-aneurysms, hemorrhage, dilation of retinal veins, and neovascularization (new blood vessels form in retina).
Glaucoma
Increased intraocular pressure results in damage to the retina and optic nerve with loss of vision.
Hordeolum
Stye or sty
Localized, purulent, inflammatory staphylococcal infections of a sebaceous oil-producing gland in the eyelid.
Macular degeneration
Progressive damage to the macula of the retina.
Nystagmus
Repetitive rhythmic movements of one or both eyes.
Retinal detachment
Two layers of the retina separate from each other.
Strabismus
Abnormal deviation of the eye.
Esotropia
One eye turns inward; cross-eyed
Exotropia
One eye turns outward; “wall-eyed”
Hypertropia
Upward deviation of one eye
Hypotropia
Downward deviation of one eye
Amblyopia
Partial loss of vision from “lazy eye”
Diplopia
Double vision
Visual Acuity Test
Clarity of vision is assessed.
Visual Field Test
Measurement of the entire scope of vision (peripheral and central).
Enucleation
Removal of the entire eyeball.
Keratoplasty
Surgical repair of the cornea.
LASIK
Use of an excimer laser to correct errors of refraction.
Phacoemulsification
Ultrasonic vibrations break up the lens; the pieces are then aspirated through the ultrasonic probe.
Sclera buckle
Suture of a silicone band to the sclera over a detached portion of the retina.
IOL
Intraocular lens
IOP
Intraocular pressure
PERRLA
Pupils equal, round, reactive to light and accommodation.
Cochlea
Snail shell-shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells.
Eustachian tube
Auditory tube.
Incus
Second ossicle (small bone) of the middle ear; incus means anvil.
Labyrinth
Maze-like series of canals of the inner ear. This includes the conch Lea, vestibule and semicircular canals.
Malleus
First ossicle if the middle ear; malleus means hammer
Oval window
Membrane between the middle ear and the inner ear.
Semicircular canals
Passages in the inner ear associated with maintaining equilibrium.
Stapes
Third ossicle of the middle ear. Stapes means stirrup.
Tympanic membrane
Membrane between the outer and the middle ear; also called the eardrum.
Vestibule
Central cavity of the labyrinth, connecting the semicircular canals and the conchlea.
Acous/o
Hearing
Audi/o
Hearing; sense of hearing
Audit/o
Hearing
Aur/o
Auricul/o
Ear
Cochle/o
Cochlea
Mastoid/o
Mastoid process
Myring/o
Eardrum, tympanic membrane
Ossicul/o
Ossicle
Ot/o
Ear
Salping/o
Eustachian tube, auditory tube
Staped/o
Stapes (third bone of the middle ear)
Tympan/o
Eardrum, tympanic membrane
Vestibul/o
Vestibule
- acusis
- cusis
Hearing
-meter
Instrument to measure
-otia
Ear condition
Acoustic neuroma
Benign tumor arising from the acoustic vestibulocochlear nerve (eighth cranial nerve) in the brain.
Deafness
Loss of the ability to hear.
Menière disease
Disorder of the labyrinth of the inner ear; elevated endosymbiosis pressure within the cochlea (cochlear hydrops) and semicircular canals (vestibular hydrops).
Otitis media
Inflammation of the middle ear.
Otosclerosis
Hardening of the bony tissue of the middle ear.
Tinnitus
Sensation of noises (ringing, buzzing, whistling booming) in the ears.
Vertigo
Sensation of irregular or whirling motion either of oneself or of external objects.
EENT
Eyes, ear, nose and throat
ENT
Eyes, nose and throat