Chapter 11 Flashcards Preview

Medical Terminology Ann Ehrlich and Carol Schroeder > Chapter 11 > Flashcards

Flashcards in Chapter 11 Deck (46)
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0
Q

tinnitus

A

a ringing, buzzing, or roaring sound in one or both ears

1
Q

conjunctivitis

A

an inflammation of the conjunctiva that is usually caused by an infection or allergy

2
Q

legal blindness

A

when the best-corrected vision is reduced to 20/200 or less

3
Q

cochlear implant

A

an implanted electronic device that can give a person who is deaf a useful auditory understanding of the environment, hearing, or both and help the person to understand speech. Or an electronic device that bypasses the damaged portions of the ear and directly stimulates the auditory nerve.

4
Q

Eustachian tubes

A

also known as auditory tubes, they are narrow tubes that lead from the middle ear to the nasal cavity and the throat (nasopharynx)

5
Q

labyrinthectomy

A

is the surgical removal of all or a portion of the labyrinth

6
Q

audiometer

A

test for ability to hear - hearing acuity

7
Q

intraocular lens

A

a surgically implanted replacement for a natural lens that has been removed

8
Q

tympanometry

A

use of air pressure in the ear canal to test for disorders of the middle ear. it is an indirect measurement of acoustical energy absorbed or reflected by the middle ear.

9
Q

otoplasty

A

surgical repair, restoration, or alteration of the pinna of the ear

10
Q

dacryocystitis or dacryoadenitis

A

inflammation of the lacrimal sac or inflammation of lacrimal gland caused by a bacterial, viral, or fungal infection. dacry/o - tear; aden - gland

11
Q

papilledema

A

swelling of the optic nerve at the point of entrance through the optic disk. also known as choked disk

12
Q

otopyorrhea

A

flow of pus from the ear

13
Q

cochlea

A

a structure that is also a duct filled with fluid that vibrates when sound waves strike it. it is snail-shaped structure in the inner ear where sound vibrations are converted into nerve impulses

14
Q

sclera

A

also known as the white of the eye; it maintains the shape of he eye and protects the delicate inner layers of tissue

15
Q

fluorescein staining

A

causes a corneal abrasion to appear bright green temporarily

16
Q

anisocoria

A

a condition in which the pupils are unequal in size

17
Q

macular degeneration

A

the condition is a gradually progressive condition in which the macula at the centre of the retina is damaged, resulting in the loss of central vision, but not total blindness.

18
Q

orbitotomy

A

a surgical incision into the orbit. the procedure is performed for biopsy, abscess drainage, or removal of a tumor or foreign object

19
Q

amblyopia

A

is a dimness of vision or the partial loss of sight, especially in one eye, without detectable disease of the eye

20
Q

mydriatic drops

A

are placed into the eyes to produce temporary paralysis, forcing the pupils to remain dilated even in the presence of bright light.

21
Q

optometrist

A

holds a doctor of optometry degree and provides primary eye care, including diagnosing eye diseases and conditions and measuring the accuracy of vision to determine whether corrective lenses are needed

22
Q

optician

A

a health care practitioner who designs, fits, and dispenses lenses for vision correction

23
Q

ophthalmologist

A

a physician who specializes in diagnosing and treating the full spectrum of diseases and disorders of the eyes

24
Q

visual acuity

A

the ability to distinguish object details and shape at a distance. acuity means sharpness

25
Q

otomycosis

A

swimmer’s ear - is a fungal infection of the external auditory canal

26
Q

entropion

A

is the inversion of the edge of an eyelid; inversion means turning inward

27
Q

fenestration

A

a surgical procedure in which a new opening is created in the labyrinth to restore lost hearing

28
Q

radial keratotomy

A

surgical procedure to treat myopia

29
Q

nystagmus

A

involuntary, constant, rhythmic movement of the eyeball that can be congenital or caused by a neurological injury or drug use

30
Q

mydriasis

A

dilation of the pupil

31
Q

miosis

A

contraction of the pupil normally in response to exposure to light, but also possibly due to the use of prescription or illegal drugs

32
Q

barotrauma

A

a pressure-related ear condition. can be caused by pressure changes when flying, driving in the mountains, scuba diving, or when the Eustachian tube is blocked

33
Q

presbycusis

A

a gradual loss of sensorineural hearing that occurs as the body ages

34
Q

subconjunctival hemorrhage

A

bleeding between the conjunctiva and the sclera

35
Q

sensorineural hearing loss

A

develops when the auditory nerve or hair cells in the inner ear are damaged

36
Q

laser iridotomy

A

is a procedure used to treat closed-angle glaucoma by creating an opening that allows the aqueous humor to flow between the anterior and posterior chambers of the anterior segment of the eye

37
Q

laser trabeculopasty

A

used to treat open-angle glaucoma by creating openings in the trabecular meshwork to allow the fluid to drain properly

38
Q

slit-lamp ophthalmoscopy

A

a diagnostic procedure that examines the structures at the front of the eye, including the cornea, iris, and lens

39
Q

emmetropia

A

describes the normal relationship between the refractive power of the eye and the shape of the eye that enables light rays to focus correctly on the retina

40
Q

diplopia

A

double vision; perception of two images of a single object.

41
Q

corneal abrasion

A

an injury, such as a scratch or irritation, to the outer layers of the cornea

42
Q

corneal ulcer

A

a pitting of the cornea caused by an infection or injury

43
Q

periorbital edema

A

the swelling of the tissues surrounding the eye or eyes

44
Q

retinitis pigmentosa

A

a progressive degeneration of the retina that affects night and peripheral vision

45
Q

adnexa of the eyes (adnexa oculi

A

the structures outside the eyeball. These include the orbit, eye muscles, eyelids, eyelashes, conjunctiva and lacrimal apparatus.