Chapter 11

Question 0

tinnitus

Answer 0

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

Question 1

conjunctivitis

Answer 1

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

Question 2

legal blindness

Answer 2

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

Question 3

cochlear implant

Answer 3

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.

Question 4

Eustachian tubes

Answer 4

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

Question 5

labyrinthectomy

Answer 5

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

Question 6

audiometer

Answer 6

test for ability to hear - hearing acuity

Question 7

intraocular lens

Answer 7

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

Question 8

tympanometry

Answer 8

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.

Question 9

otoplasty

Answer 9

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

Question 10

dacryocystitis or dacryoadenitis

Answer 10

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

Question 11

papilledema

Answer 11

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

Question 12

otopyorrhea

Answer 12

flow of pus from the ear

Question 13

cochlea

Answer 13

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

Question 14

sclera

Answer 14

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

Question 15

fluorescein staining

Answer 15

causes a corneal abrasion to appear bright green temporarily

Question 16

anisocoria

Answer 16

a condition in which the pupils are unequal in size

Question 17

macular degeneration

Answer 17

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.

Question 18

orbitotomy

Answer 18

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

Question 19

amblyopia

Answer 19

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

Question 20

mydriatic drops

Answer 20

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

Question 21

optometrist

Answer 21

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

Question 22

optician

Answer 22

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

Question 23

ophthalmologist

Answer 23

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

Question 24

visual acuity

Answer 24

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

Question 25

otomycosis

Answer 25

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

Question 26

entropion

Answer 26

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

Question 27

fenestration

Answer 27

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

Question 28

radial keratotomy

Answer 28

surgical procedure to treat myopia

Question 29

nystagmus

Answer 29

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

Question 30

mydriasis

Answer 30

dilation of the pupil

Question 31

miosis

Answer 31

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

Question 32

barotrauma

Answer 32

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

Question 33

presbycusis

Answer 33

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

Question 34

subconjunctival hemorrhage

Answer 34

bleeding between the conjunctiva and the sclera

Question 35

sensorineural hearing loss

Answer 35

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

Question 36

laser iridotomy

Answer 36

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

Question 37

laser trabeculopasty

Answer 37

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

Question 38

slit-lamp ophthalmoscopy

Answer 38

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

Question 39

emmetropia

Answer 39

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

Question 40

diplopia

Answer 40

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

Question 41

corneal abrasion

Answer 41

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

Question 42

corneal ulcer

Answer 42

a pitting of the cornea caused by an infection or injury

Question 43

periorbital edema

Answer 43

the swelling of the tissues surrounding the eye or eyes

Question 44

retinitis pigmentosa

Answer 44

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

Question 45

adnexa of the eyes (adnexa oculi

Answer 45

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