Eye Terminology

Question 1

cornea

Answer 1

six layered, clear structure in front of eye; part of outer protective layer; bulging curvature provides the major refraction of the eye; no blood vessels

Question 2

two place of pain in the eye

Answer 2

cornea and ciliary body

Question 3

corneal scar

Answer 3

insult to the stoma of the cornea

Question 4

layers of the cornea

Answer 4

(outer) corneal epithelium, bowman’s membrane, stoma, dua’s layer, corneal endothelium (inner)

Question 5

corneal epithelial

Answer 5

exterior layer; maintains barrier; cells are motile and heal quickly

Question 6

corneal endothelium

Answer 6

1 cell thick, pumps water out of cornea; can not heal itself

Question 7

sclera

Answer 7

the tough, white fibrous, outer protective layer of the eye, nontransparent; connective tissue

Question 8

pupil

Answer 8

round hole in the center of the iris, through which light passes

Question 9

iris

Answer 9

colored portion of the eye which surround the pupil, it can expand and contract to alter the amount of light entering the eye

Question 10

alger brush

Answer 10

used when corneal abrasion occurs and there are rough edges; ode to Bowman

Question 11

conjunctiva

Answer 11

clear membrane that lies over the sclera and lines the inside of the eyes; most common site of red eye

Question 12

eyelids

Answer 12

two structures, upper and lower, that distribute tears over the outer eye and close to protect the eye

Question 13

eye lashes

Answer 13

cilia or har that prevent foreign structures from irritating the outer eye

Question 14

eye brows

Answer 14

pair of hairy areas above each eye that protect the eye

Question 15

aqueous humor

Answer 15

watery fluid that flows into the posterior chamber of the eye and exits the anterior chamber of the eye and provides nutrition

Question 16

crystalline lins

Answer 16

biconvex, resilient, transparent structure in the ye that focuses light by changing its curvature

Question 17

ciliary muscle/body

Answer 17

muscle that control the focusing of the eye, by causing the lens to change shape

Question 18

suspensory ligaments

Answer 18

zonules; long, thin fibers that connect the lens to the ciliary muscle; relax=tight ligaments, accommodation=loose ligaments

Question 19

vitreous humor

Answer 19

clear, jelly like substance that fills the inside of the eye behind the lens

Question 20

optic nerve

Answer 20

bundle of nerve fibers that carry vision impulses from the retina to the brain

Question 21

retina

Answer 21

inner lining of the eye, composed of nerve cells, giving the eye its sensitivity to light

Question 22

choroid

Answer 22

highly vascular layer between the sclera and retina, whose function is nourishment to the retina

Question 23

macula

Answer 23

small, thinned out area of the retina, consisting almost exclusively of cone receptor cells, providing the eye with clear, central vision

Question 24

cones

Answer 24

retinal receptor cells responsible for clear and color vision; concentrated in the fovea; functions poorly in low levels of illumination

Question 25

rods

Answer 25

retinal receptor cells, responsible for movement and black/white vision; functions in low levels of illumination