Chapter 12 Eye Flashcards Preview

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Flashcards in Chapter 12 Eye Deck (45):
1

Sclera

Outer protective layer of the eye; (white of the eye)

2

Cornea

Transparent anterior part of the sclera, anterior to the aqueous humor and lies over the iris. It allows the light rays to enter the eye.

3

Choroid

Middle layer of the eye, interlaced with many blood vessels that supply nutrients to the eye.

4

Iris

The pigmented muscular structure that regulates the amount of light entering the eye by controlling the size of the pupil

5

Pupil

Opening in the center of the iris

6

Lens

Lies directly behind the pupil; it's function is to focus and bend light

7

Retina

Innermost layer of the eye, which contains the vision receptors

8

Lacrimal glands and ducts

Produce and drain tears

9

Optic nerve

Carries visual impulses from the retina to the brain

10

Conjunctiva

Mucous membrane lining the eyelids and covering the anterior portion of the sclera

11

Blephar/o

Eyelid

12

Conjunctiv/o

Conjunctiva

13

Cor/o, core/o, pupill/o

Pupil

14

Corne/o, kerat/o

Cornea

15

Dacry/o, lacrim/o

Tear, tear duct

16

Ir/o, irid/o

Iris

17

Ocul/o, ophthalm/o

Eye

18

Opt/o

Vision

19

Phac/o, phak/o

Lens

20

Retin/o

Retina

21

Scler/o

Sclera

22

Cry/o

Cold

23

Dipl/o

Two, double

24

Is/o

Equal

25

Phot/o

Light

26

Ton/o

Tension, pressure

27

Bi-, bin-

Two

28

-opia

Vision (condition)

29

-phobia

Abnormal fear of or aversion to specific things

30

-plegia

Paralysis

31

-ptosis

Drooping

32

Amblyopia

Reduced vision in one eye caused by disuse or misuse associated w strabismus, unequal refractive errors, or otherwise impaired vision. (Lazy eye)

33

Astigmatism

Defective curvature of the refractive surfaces (cornea or lens) of the eye

Most common vision problem.. Usually a lens/cornea issue

34

Cataract

Clouding of the lens of the eye

#1 cause of blindness

35

Chalazion

Obstruction of a oil gland of the eyelid (also called meibomian cyst)

36

Detached retina

Separation of the retina from the choroid in back of the eye

37

Glaucoma

Eye disorder characterized by optic nerve damage usually caused by the abnormal increase of intra ocular pressure (IOP)

Leads to blindness

38

Hyperopia

Farsightedness

39

Macular degeneration

A progressive deterioration of the portion of the retina called the macula lutea, resulting in loss of central vision

40

Myopia

Nearsightedness

41

Nyctalopia

Poor vision at night or in faint light ( night blindness)

42

Nystagmus

Involuntary, jerking movements of the eyes

43

Pinguecula

Yellowish mass on the conjunctiva that may be related to exposure to ultraviolet light, dry climates, and dust.

44

Sty

Infection of an oil gland of the eyelid (hordeolum)

45

Presbyopia

Impaired vision as a result of aging