Chapter 12 Eye

Question 1

Sclera

Answer 1

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

Question 2

Cornea

Answer 2

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.

Question 3

Choroid

Answer 3

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

Question 4

Iris

Answer 4

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

Question 5

Pupil

Answer 5

Opening in the center of the iris

Question 6

Lens

Answer 6

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

Question 7

Retina

Answer 7

Innermost layer of the eye, which contains the vision receptors

Question 8

Lacrimal glands and ducts

Answer 8

Produce and drain tears

Question 9

Optic nerve

Answer 9

Carries visual impulses from the retina to the brain

Question 10

Conjunctiva

Answer 10

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

Question 11

Blephar/o

Answer 11

Eyelid

Question 12

Conjunctiv/o

Answer 12

Conjunctiva

Question 13

Cor/o, core/o, pupill/o

Answer 13

Pupil

Question 14

Corne/o, kerat/o

Answer 14

Cornea

Question 15

Dacry/o, lacrim/o

Answer 15

Tear, tear duct

Question 16

Ir/o, irid/o

Answer 16

Iris

Question 17

Ocul/o, ophthalm/o

Answer 17

Eye

Question 18

Opt/o

Answer 18

Vision

Question 19

Phac/o, phak/o

Answer 19

Lens

Question 20

Retin/o

Answer 20

Retina

Question 21

Scler/o

Answer 21

Sclera

Question 22

Cry/o

Answer 22

Cold

Question 23

Dipl/o

Answer 23

Two, double

Question 24

Is/o

Answer 24

Equal

Question 25

Phot/o

Answer 25

Light

Question 26

Ton/o

Answer 26

Tension, pressure

Question 27

Bi-, bin-

Answer 27

Two

Question 28

-opia

Answer 28

Vision (condition)

Question 29

-phobia

Answer 29

Abnormal fear of or aversion to specific things

Question 30

-plegia

Answer 30

Paralysis

Question 31

-ptosis

Answer 31

Drooping

Question 32

Amblyopia

Answer 32

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

Question 33

Astigmatism

Answer 33

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

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

Question 34

Cataract

Answer 34

1 cause of blindness

Clouding of the lens of the eye

Question 35

Chalazion

Answer 35

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

Question 36

Detached retina

Answer 36

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

Question 37

Glaucoma

Answer 37

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

Leads to blindness

Question 38

Hyperopia

Answer 38

Farsightedness

Question 39

Macular degeneration

Answer 39

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

Question 40

Myopia

Answer 40

Nearsightedness

Question 41

Nyctalopia

Answer 41

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

Question 42

Nystagmus

Answer 42

Involuntary, jerking movements of the eyes

Question 43

Pinguecula

Answer 43

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

Question 44

Sty

Answer 44

Infection of an oil gland of the eyelid (hordeolum)

Question 45

Presbyopia

Answer 45

Impaired vision as a result of aging