Ch 10 Part 1

Front 1

aque/o

Back 1

water

Front 2

blephar/o

Back 2

eyelid

Front 3

conjunctiv/o

Back 3

conjunctiva (to join together)

Front 4

corne/o; kerat/o

Back 4

cornea

Front 5

cycl/o

Back 5

circle, ciliary body

Front 6

ir/o; irid/o

Back 6

colored circle, iris

Front 7

lacrim/o; dacry/o

Back 7

tear

Front 8

ocul/o; opthalm/o; opt/o

Back 8

eye

Front 9

phac/o; phak/o

Back 9

lens (lentil)

Front 10

phot/o

Back 10

light

Front 11

presby/o

Back 11

old age

Front 12

retin/o

Back 12

retina

Front 13

scler/o

Back 13

hard or sclera

Front 14

vitre/o

Back 14

glassy

Front 15

-opia

Back 15

condition of vision

Front 16

anterior chamber

Back 16

fluid-filled space between the cornea and iris

Front 17

aqueous humor

Back 17

watery liquid secreted by the ciliary processes that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens

Front 18

canal of Schlemm

Back 18

duct in the anterior chamber that carries filtered aqueous humor to the veins and bloodstream

Front 19

choroid

Back 19

vascular layer beneath the sclera that provides nourishment to the outer portion of the retina

Front 20

ciliary body

Back 20

ring of tissue behind the peripheral iris that is composed of ciliary muscle and ciliary processes

Front 21

ciliary muscle

Back 21

smooth muscle portion of the ciliary body, which contracts to assist in near vision

Front 22

ciliary processes

Back 22

epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor

Front 23

conjunctiva

Back 23

mucous membrane that lines the eyelids and outer surface of the eyeball

Front 24

cornea

Back 24

transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image

Front 25

eyelid; palpebra

Back 25

movable, protective fold that opens and closes, covering the eye

Front 26

fovea centralis

Back 26

pinpoint depression in the center of the macula lutea that is the site of sharpest vision

Front 27

fundus

Back 27

interior surface of the eyeball, including the retina, optic disk, macula, and posterior pole (curvature at the back of the eye)

Front 28

glands of Zeis

Back 28

oil glands surrounding the eyelashes

Front 29

meibomain glands

Back 29

oil glands located along the rim of the eyelids

Front 30

iris

Back 30

colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil

Front 31

lacrimal gland

Back 31

gland located in the upper outer region above the eyeball that secretes tears

Front 32

lacrimal ducts

Back 32

tubes that carry tears to the lacrimal sac

Front 33

lacrimal sac

Back 33

structure that collects tears before emptying into the nasolactimal duct

Front 34

lens

Back 34

transparent structure behind the pupil that bends and focuses light rays on the retina

Front 35

lens capsule

Back 35

capsule that encloses the lens

Front 36

macula lutea; macula

Back 36

central region of the retina; responsible for central vision; yellow pigment provides its color

Front 37

nasolacrimal duct

Back 37

passageway for tears from the lacrimal sac into the nose

Front 38

optic disk

Back 38

exit site of retinal nerve fibers as well as entrance point for retinal arteries and exit point for retinal veins

Front 39

optic nerve

Back 39

nerve responsible for carrying impulses for the sense of sight from the retina to the brain

Front 40

posterior chamber

Back 40

space between the back of the iris and the front of the vitreous chamber; filled with aqueous humor

Front 41

pupil

Back 41

black, circular opening in the center of the iris through which light passes as it enters the eye

Front 42

retina

Back 42

innermost layer that perceives and transmits light to the optic nerve

Front 43

cones

Back 43

cone-shaped cells within the retina that are color sensitive and respond to bright light

Front 44

rods

Back 44

rod-shaped cells within the retina that respond to dim light

Front 45

sclera

Back 45

tough, fibrous, white outer coat extending from the cornea to the optic nerve

Front 46

trabecular meshwork

Back 46

mesh-like structure in the anterior chamber that filters the aqueous humor as it flows into the canal of Schlemm

Front 47

vitreous

Back 47

jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye

Front 48

asthenopia

Back 48

eyestrain

Front 49

blepharospasm

Back 49

involuntary contraction of the muscles surrounding the eye causing uncontrolled blinking and lid squeezing

Front 50

diplopia

Back 50

double vision

Front 51

exophthalmos/exophthalmus

Back 51

abnormal protrusion of one or both eyeballs

Front 52

lacrimation

Back 52

secretion of tears

Front 53

nystagmus

Back 53

involuntary, rapid, oscillating movement of the eyeball

Front 54

photophobia

Back 54

extreme sensitivity to, and distortion from, light

Front 55

scotoma

Back 55

blind spot in vision