Ch. 16: Special Senses Of The Eye And Ear

Front 1

Eyebrows

Back 1

keep sweat from running into the eye and function in nonverbal communication

Front 2

Eyelids

Back 2

protect the eye from foreign objects

Front 3

Eyelashes

Back 3

strong hairs that help keep debris out of the eyes

Front 4

Function of tears

Back 4

1. clean and lubricate the surface of the eye

2. deliver nutrients and oxygen to the conjunctiva

3. prevent infection through a bactericidal enzyme called lysozyme

Front 5

canthus

Back 5

corner of the eye where upper and lower lids meet

Front 6

c'onjunctiva

Back 6

inner lining of the eyelids

Front 7

cornea

Back 7

central, transparent part of the outer coat of they eye covering the iris and pupil

Front 8

lacrimal

Back 8

pertaining to tears

Front 9

nasolacrimal duct

Back 9

passage from the lacrimal sac to the nose

Front 10

lysozyme

Back 10

enzyme that dissolves the cell walls of bacteria

Front 11

opthalmology

Back 11

medical specialty that diagnoses and treats diseases of the eye

Front 12

orbit

Back 12

bony socket that holds the eyeball

Front 13

periorbital

Back 13

pertaining to tissues around the orbit

Front 14

pink eye

Back 14

conjunctivitis

Front 15

purulent

Back 15

showing or containing a lot of pus

Front 16

tarsus

Back 16

flat fibrous plate that gives shape to the outer edges of the eyelids

Front 17

antibiotic

Back 17

substance that has the capacity to destroy bacteria and other microorganisms

Front 18

blepharitis

Back 18

inflammation of the eyelid

Front 19

chalazion

Back 19

cyst on the outer edge of an eyelid

Front 20

contagious

Back 20

able to be transmitted, as infections transmitted from person to person or from person to air or surface to person

Front 21

contaminate

Back 21

to case the presence of an infectious agent to be on any surface

Front 22

dacryostenosis

Back 22

narrowing of the nasolacrimal duct

Front 23

hordeolum stye

Back 23

abscess in an eyelash follicle

Front 24

paresis

Back 24

partial paralysis

Front 25

ptosis

Back 25

sinking down of an eyelid or organ

Front 26

accommodation

Back 26

act of adjusting something to make it fit the needs; in the case of the eye, the lens adjusts itself

Front 27

amblyopia

Back 27

failure or incomplete development of the pathways of vision to the brain

Front 28

atropine

Back 28

pharmacologic agent used to dilate pupils

Front 29

congenital

Back 29

present at birth, either inherited or due to an event during gestation up to the moment of birth

Front 30

esotropia

Back 30

a turning of the eye inward toward the nose

Front 31

exotropia

Back 31

a turning of the eye outward away from the nose

Front 32

extrinsic

Back 32

extrinsic eye muscles are located on the outside of the eye, as opposed to intrinsic muscles, which are located inside the eye

Front 33

ocular

Back 33

pertaining to the eye

Front 34

optometrist

Back 34

someone who is skilled in the measurement of vision but cannot treat eye diseases or prescribe medication

Front 35

steropsis

Back 35

three-dimensional visual

Front 36

strabismus

Back 36

a turning of an eye away from its normal position

Front 37

functions of eyeball

Back 37

1. adjust

2. focus

3. produce images

Front 38

ciliary body

Back 38

muscles that make the eye lens thicker and thinner

Front 39

iris

Back 39

colored portion of the eye with the pupil in its center

Front 40

lens

Back 40

transparent refractive structure behind the iris

Front 41

presbyopia

Back 41

difficulty in nearsighted vision occuring in middle and old age

Front 42

pupil

Back 42

opening in the center of the iris that allows light to reach the lens

Front 43

refract

Back 43

make a change in direction of, or bend, a ray of light

Front 44

retina

Back 44

light-sensitive inner layer of eyeball

Front 45

sclera

Back 45

fibrous outer covering of the eyeball and the white of the eye

Front 46

scleritis

Back 46

inflammation of the sclera

Front 47

sphincter

Back 47

band of muscle that encircles an opening; when it contracts, the opening squeezes closed

Front 48

astigmatism

Back 48

inability to focus light rays that enter the eye in different planes

Front 49

chiasm

Back 49

x-shaped crossing of the two optic nerves at the base of the brain

Front 50

emmetropia

Back 50

normal refractive condition of the eye

Front 51

foramen

Back 51

an opening through a structure

Front 52

hyperopia

Back 52

able to see distant objects but unable to see close objects

Front 53

in situ

Back 53

in the correct place

Front 54

keratomileusis

Back 54

surgical procedure that involves cutting thand shaping the cornea

Front 55

keratotomy

Back 55

incision in the cornea

Front 56

myopia

Back 56

able to see close objects but unable to see distant objects

Front 57

presbyopia

Back 57

difficulty in nearsighted vision occuring in middle and old age in both sexes

Front 58

radiation

Back 58

a spreading out, as of anatomical parts

Front 59

tract

Back 59

bundle of nerve fibers with a common origin and destination

Front 60

abrasion

Back 60

area of skin or mucous membrane that has been scraped off

Front 61

allergen

Back 61

substance producing a hypersensitivity reaction

Front 62

cataract

Back 62

complete or partial opacity of the lens

Front 63

fluorescein

Back 63

dye that produces a vivid green color under a blue light to diagnose corneal abrasions and foreign bodies in the eye

Front 64

glaucoma

Back 64

increased intraocular pressure

Front 65

infectious

Back 65

capable of being transmitted, or caused by infection by a microorganism

Front 66

intraocular

Back 66

pertaining to the inside of the eye

Front 67

ophthalmia neonatorum

Back 67

conjunctivitis of the newborn

Front 68

peripheral vision

Back 68

ability to see objects as they come into the outer edges of the visual field

Front 69

phacoemulsification

Back 69

technique used to fragment the center of the lens into very tiny pieces and suck them out of the eye

Front 70

photosensitivity

Back 70

condition in which light produces pain in the eye

Front 71

pollution

Back 71

condition that is unclean, impure and a danger to health

Front 72

angiography

Back 72

radiography of vessels after injection of contrast material

Front 73

cryopexy

Back 73

repair of a detached retina by freezing it to surrounding tissue

Front 74

intracranial

Back 74

within skull

Front 75

laser surgery

Back 75

use of a concentrated, intense narrow beam of electromagnetic radiation for surgery

Front 76

leukocoria

Back 76

reflection in pupil of white mass in the eye

Front 77

metastasis

Back 77

spread of disease from one part of the body to another

Front 78

microaneurysm

Back 78

focal dilation of retinal capillaries

Front 79

ophthalmoscope

Back 79

instrument for viewing the retina

Front 80

apilledma

Back 80

swelling of the optic disc in the retina

Front 81

photocoagulation

Back 81

use of light to form a clot

Front 82

retinoblastoma

Back 82

malignant neoplasm of primitive retinal cells

Front 83

retinopathy

Back 83

degenerative disease of the retina

Front 84

fundus

Back 84

part farthest from the opening of a hollow organ

Front 85

ishihara color system

Back 85

test for color vision defects

Front 86

jaeger reading cards

Back 86

printed in different sizes of print for testing near vision

Front 87

snellen letter chart

Back 87

test for acuity of distant vision

Front 88

tonometer

Back 88

instrument for determining intraocular pressure