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Semester 2 > CP2 chapter 6 > Flashcards

CP2 chapter 6 Flashcards

1
Q

visual acuity test

A

screening test to detect deficiencies in vision

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2
Q

color blindness

A

inability to distinguish certain colors

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3
Q

most common color blindness

A

red and green

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4
Q

audiometer

A

instrument that emits sound waves at various frequencies

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5
Q

irrigation

A

washing a body canal with a flowing solution

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6
Q

instillation

A

dropping a liquid into a body cavity

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7
Q

sclera

A

outer layer

tough, white fibrous connective tissue

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8
Q

cornea

A

transparent covering over the colored part of the eye

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9
Q

choroid

A

middle layer

absorb stray light rays

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10
Q

ciliary body

A

contains muscles that control the shape of the lens

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11
Q

function of the suspensory ligaments

A

suspend the lens in place

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12
Q

lens

A

responsible for focusing the light rays on the retina

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13
Q

iris

A

colored part

controls the size of the pupil

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14
Q

pupil

A

opening in the eye that permits the entrance of light rays

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15
Q

retina

A

inner layer

focus light rays and then transmit to the brain

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16
Q

anterior chamber

A

area between the cornea and iris

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17
Q

posterior chamber

A

area between the iris and the lens

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18
Q

vitreous humor

A

transparent jelly like material

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19
Q

function of the vitreous humor

A

maintain the shape of the eyeball

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20
Q

conjunctiva

A

membrane that lines the eyelids and covers the front of the eye except the cornea

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21
Q

visual acuity

A

acuteness or sharpness of vision

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22
Q

errors of refraction

A

light rays aren’t being refracted or bent properly and aren’t focused on the retina

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23
Q

refraction

A

ability of the eye to bend the parallel light rays coming into it so that they can be focused on the retina

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24
Q

myopia

A

nearsighted

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25
Q

nearsighted

A

difficulty seeing objects at a distance

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26
Q

hyperopia

A

farsighted

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27
Q

astigmatism

A

refractive error that causes distorted and blurred vision for both near and far objects

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28
Q

presbyopia

A

starts when you turn 40

decrease in the elasticity of the lens of the eye

29
Q

ophthalmologist

A

physician who specializes in diagnosing and treating diseases and disorders of the eye

30
Q

optometrist

A

measures visual acuity and prescribing corrective lenses for the treatment of refractive errors
CAN’T PRESCRIBE MEDICATIONS

31
Q

optician

A

interprets and fills prescriptions for eyeglasses and contact lenses

32
Q

distance for snellen test

A

20 ft

33
Q

top number for snellen test

A

distance at which the test is conducted

34
Q

below number for snellen test

A

distance from which a person with normal visual acuity can read the row of letters

35
Q

what eye do you start with for the snellen?

A

right eye

36
Q

why should you keep the eye open under the occluder?

A

causes squinting of the eye that is being tested

37
Q

near visual acuity testing

A

ability to read close objects

38
Q

congenital defects

A

more common and are inherited

39
Q

who do congential color vision deficiencies affect?

A

males

40
Q

acquired defects

A

acquired after birth

41
Q

Ishihara

A

checks for color blindness

42
Q

eye irrigation

A

washing the eye with a flowing solution

43
Q

purpose of eye irrigations

A

cleanse eye, ocular discharges, or harmful chemicals

44
Q

eye instillation

A

dropping of a liquid into the lower conjunctival sac of the eye

45
Q

eye instillations treatment

A

eye infections, soothe eye, dilate pupil

46
Q

ear functions

A

hearing and in maintaining equilibruium

47
Q

auricle

A

flap of cartilage covered with skin that projects from the side of the head

48
Q

function of the auricle

A

receive and collect sound waves and to direct them toward the external auditory canal

49
Q

external auditory canal

A

1 in long

50
Q

cerumen

A

lubricates and protects the ear canal

51
Q

shape of external auditory canal

A

S

52
Q

tympanic membrane

A

pearly gray, semitransparent membrane that receives sound waves

53
Q

eustachian tube

A

connects the middle ear to the nasopharynx

54
Q

cochlea

A

essential organ of hearing

55
Q

semicircular canals

A

help to maintain equilibrium

56
Q

normal hearing frequencies

A

300-4000

57
Q

conductive hearing loss

A

results from physical interference

58
Q

sensorineural hearing loss

A

results from damage to the inner ear or auditory nerve

59
Q

most common cause of sensorineural hearing loss

A

presbycusis

60
Q

mixed hearing loss

A

combination of conductive and sensorineural loss

61
Q

masking

A

presenting sound to the ear not being tested so that the pts response is based on on hearing in the ear being tested

62
Q

gross hearing test

A

identify a large hearing impairment

63
Q

tuning fork test

A

general assessment of hearing

63
Q

Weber test

A

useful assessment of hearing loss when one ear hears better than the other

64
Q

rinne test

A

compares the duration of sound perception by air conduction with that of bone conduction

65
Q

audimetry

A

measurement of hearing acuity using a audiometer

66
Q

typanometry

A

determines the cause of hearing loss

67
Q

ear irrigation cotton swab

A

dry

Semester 2 (26 decks)

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