Lesson 13

Front 1

sclera

Back 1

tough outermost layer of the eye, forms protective covering for the delicate nerves and membranes beneath

Front 2

cornea

Back 2

the anterior, visible, and transparent portion of the sclera

Front 3

conjunctiva

Back 3

transparent mucous membrane that covers the anterior portion of the sclera; an extension of the lining of the eyelids

Front 4

palpebral conjunctiva

Back 4

the portion of the conjunctiva that covers the eyelids

Front 5

bulbar conjunctiva

Back 5

the membrane covering the sclera

Front 6

fornix conjunctiva

Back 6

the loose fold connecting the bulbar conjunctiva and palpebral conjunctiva

Front 7

episcleritis

Back 7

a common disease of the sclera

Front 8

keratitis

Back 8

corneal ulcer

Front 9

herpatic keratitis

Back 9

most common viral corneal ulcer caused by herpes simplex virus

Front 10

hypopyon keratitis

Back 10

serpentlike ulcer with pus in the anterior chamber of the eye

Front 11

xerosis

Back 11

hardening and drying of the epithelium throughout the body

Front 12

xerophthalmia

Back 12

xerosis of the conjunctiva and cornea

Front 13

keratomalacia

Back 13

softening of the cornea

Front 14

uvea

Back 14

the middle, dark brown, vascular layer of the eye

Front 15

glaucoma

Back 15

when intraocular pressure increases and causes damage to nerve fibers at the optic disk

Front 16

tonometer

Back 16

an instrument that measures the intraocular pressure

Front 17

retina

Back 17

an outgrowth of the optic nerve; forms the innermost layer of the globe of the eye

Front 18

scotopia

Back 18

night vision

Front 19

nyctalopia

Back 19

night blindness

Front 20

deuteranopia

Back 20

green color-blindness

Front 21

tritanopia

Back 21

color-blindness in which blue and yellow appear gray

Front 22

erythropia

Back 22

seeing everything through a red haze

Front 23

chloropia

Back 23

seeing everything through a green haze

Front 24

cyanopia

Back 24

seeing everything through a blue haze

Front 25

xanthopsia

Back 25

when all objects appear yellow

Front 26

fovea (centralis)

Back 26

where the light rays converge on the retina

Front 27

emmetropia

Back 27

normal focusing of light on the retina

Front 28

myopia

Back 28

nearsightedness caused by a larger than normal eye that causes light rays to focus in front of the retina; can be corrected with concave lenses

Front 29

hyperopia

Back 29

farsightedness results from the failure of light rays to focus directly on the retina and focus behind the retina; can be corrected with convex lenses

Front 30

astigmatism

Back 30

when the lens or cornea is egg shaped rather than spherical, causing some light rays to focus behind the retina and some to focus in front

Front 31

blephar-

Back 31

combining form
eyelid

Front 32

choroid-

Back 32

combining form
choroid

Front 33

cor(e)-

Back 33

combining form
pupil (of the eye)

Front 34

cycl-

Back 34

combining form
circle; the ciliary body

Front 35

dacry-

Back 35

combining form
tear; lacrimal sac or duct

Front 36

herpes
herpet-

Back 36

herpes, a creeping skin disease

Front 37

ir(id)-

Back 37

combining form
iris

Front 38

junct-

Back 38

combining form
join

Front 39

kerat-

Back 39

combining form
cornea

Front 40

lacrim-

Back 40

combining form
tear

Front 41

my-

Back 41

combining form
close, shut

Front 42

ocul-

Back 42

combining form
eye

Front 43

op(s)-

Back 43

combining form
vision

Front 44

ophthalm-

Back 44

combining form
eye

Front 45

opt-

Back 45

combining form
vision, eye

Front 46

phac-
phak-

Back 46

combining form
lens

Front 47

ret-
retin-

Back 47

combining form
retain; network, plexus

Front 48

stigm-
stigmat-

Back 48

combining form
point, mark, spot

Front 49

xer-

Back 49

combining form
dry