CP2 chapter 6

Question 1

visual acuity test

Answer 1

screening test to detect deficiencies in vision

Question 2

color blindness

Answer 2

inability to distinguish certain colors

Question 3

most common color blindness

Answer 3

red and green

Question 4

audiometer

Answer 4

instrument that emits sound waves at various frequencies

Question 5

irrigation

Answer 5

washing a body canal with a flowing solution

Question 6

instillation

Answer 6

dropping a liquid into a body cavity

Question 7

sclera

Answer 7

outer layer

tough, white fibrous connective tissue

Question 8

cornea

Answer 8

transparent covering over the colored part of the eye

Question 9

choroid

Answer 9

middle layer

absorb stray light rays

Question 10

ciliary body

Answer 10

contains muscles that control the shape of the lens

Question 11

function of the suspensory ligaments

Answer 11

suspend the lens in place

Question 12

lens

Answer 12

responsible for focusing the light rays on the retina

Question 13

iris

Answer 13

colored part

controls the size of the pupil

Question 14

pupil

Answer 14

opening in the eye that permits the entrance of light rays

Question 15

retina

Answer 15

inner layer

focus light rays and then transmit to the brain

Question 16

anterior chamber

Answer 16

area between the cornea and iris

Question 17

posterior chamber

Answer 17

area between the iris and the lens

Question 18

vitreous humor

Answer 18

transparent jelly like material

Question 19

function of the vitreous humor

Answer 19

maintain the shape of the eyeball

Question 20

conjunctiva

Answer 20

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

Question 21

visual acuity

Answer 21

acuteness or sharpness of vision

Question 22

errors of refraction

Answer 22

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

Question 23

refraction

Answer 23

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

Question 24

myopia

Answer 24

nearsighted

Question 25

nearsighted

Answer 25

difficulty seeing objects at a distance

Question 26

hyperopia

Answer 26

farsighted

Question 27

astigmatism

Answer 27

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

Question 28

presbyopia

Answer 28

starts when you turn 40 | decrease in the elasticity of the lens of the eye

Question 29

ophthalmologist

Answer 29

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

Question 30

optometrist

Answer 30

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

Question 31

optician

Answer 31

interprets and fills prescriptions for eyeglasses and contact lenses

Question 32

distance for snellen test

Answer 32

20 ft

Question 33

top number for snellen test

Answer 33

distance at which the test is conducted

Question 34

below number for snellen test

Answer 34

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

Question 35

what eye do you start with for the snellen?

Answer 35

right eye

Question 36

why should you keep the eye open under the occluder?

Answer 36

causes squinting of the eye that is being tested

Question 37

near visual acuity testing

Answer 37

ability to read close objects

Question 38

congenital defects

Answer 38

more common and are inherited

Question 39

who do congential color vision deficiencies affect?

Answer 39

males

Question 40

acquired defects

Answer 40

acquired after birth

Question 41

Ishihara

Answer 41

checks for color blindness

Question 42

eye irrigation

Answer 42

washing the eye with a flowing solution

Question 43

purpose of eye irrigations

Answer 43

cleanse eye, ocular discharges, or harmful chemicals

Question 44

eye instillation

Answer 44

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

Question 45

eye instillations treatment

Answer 45

eye infections, soothe eye, dilate pupil

Question 46

ear functions

Answer 46

hearing and in maintaining equilibruium

Question 47

auricle

Answer 47

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

Question 48

function of the auricle

Answer 48

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

Question 49

external auditory canal

Answer 49

1 in long

Question 50

cerumen

Answer 50

lubricates and protects the ear canal

Question 51

shape of external auditory canal

Answer 51

S

Question 52

tympanic membrane

Answer 52

pearly gray, semitransparent membrane that receives sound waves

Question 53

eustachian tube

Answer 53

connects the middle ear to the nasopharynx

Question 54

cochlea

Answer 54

essential organ of hearing

Question 55

semicircular canals

Answer 55

help to maintain equilibrium

Question 56

normal hearing frequencies

Answer 56

300-4000

Question 57

conductive hearing loss

Answer 57

results from physical interference

Question 58

sensorineural hearing loss

Answer 58

results from damage to the inner ear or auditory nerve

Question 59

most common cause of sensorineural hearing loss

Answer 59

presbycusis

Question 60

mixed hearing loss

Answer 60

combination of conductive and sensorineural loss

Question 61

masking

Answer 61

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

Question 62

gross hearing test

Answer 62

identify a large hearing impairment

Question 63

tuning fork test

Answer 63

general assessment of hearing

Question 63

Weber test

Answer 63

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

Question 64

rinne test

Answer 64

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

Question 65

audimetry

Answer 65

measurement of hearing acuity using a audiometer

Question 66

typanometry

Answer 66

determines the cause of hearing loss

Question 67

ear irrigation cotton swab

Answer 67

dry