CP2 chapter 6 Flashcards Preview

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Flashcards in CP2 chapter 6 Deck (68)
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1

visual acuity test

screening test to detect deficiencies in vision

2

color blindness

inability to distinguish certain colors

3

most common color blindness

red and green

4

audiometer

instrument that emits sound waves at various frequencies

5

irrigation

washing a body canal with a flowing solution

6

instillation

dropping a liquid into a body cavity

7

sclera

outer layer
tough, white fibrous connective tissue

8

cornea

transparent covering over the colored part of the eye

9

choroid

middle layer
absorb stray light rays

10

ciliary body

contains muscles that control the shape of the lens

11

function of the suspensory ligaments

suspend the lens in place

12

lens

responsible for focusing the light rays on the retina

13

iris

colored part
controls the size of the pupil

14

pupil

opening in the eye that permits the entrance of light rays

15

retina

inner layer
focus light rays and then transmit to the brain

16

anterior chamber

area between the cornea and iris

17

posterior chamber

area between the iris and the lens

18

vitreous humor

transparent jelly like material

19

function of the vitreous humor

maintain the shape of the eyeball

20

conjunctiva

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

21

visual acuity

acuteness or sharpness of vision

22

errors of refraction

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

23

refraction

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

24

myopia

nearsighted

25

nearsighted

difficulty seeing objects at a distance

26

hyperopia

farsighted

27

astigmatism

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

28

presbyopia

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

29

ophthalmologist

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

30

optometrist

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