Ch. 17 Flashcards Preview

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Flashcards in Ch. 17 Deck (152):
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Accommodation

Normal adjustment of the eye to focus on objects from far to near

1

Anterior chamber

Area behind the cornea and in front of the lens and iris

2

Aqueous humor

Fluid produced by the ciliary body and found in anterior chamber

3

Biconvex

Consisting of two surfaces that are rounded, elevated, and curved evenly lens of the eye

4

Choroid

Middle, vascular layer of the eye between the retina and the sclera

5

Ciliary body

Structure surrounding the lens that connects he choroid and iris; controls shape of lens and secretes aqueous humor

6

Cone

Photoreceptors cell in the retina that transforms light energy into a nerve impulse,responsible for color and central vision

7

Conjunctiva

Delicate membrane that lines the undersurface of eyelids and covers anterior eyeball

8

Cornea

Fibrous transparent layer of clear tissue that extends over the anterior portion of eyeball

9

Fovea centralis

Tiny depression in the retina that is the region of clearest vision

10

Fungus of eye

Posterior, inner part of the eye

11

Iris

Pigmented layer that opens and closes to allow more or less light into the eye

12

Lens

Transparent biconvex body behind the pupil of the eye

13

Macula

Yellowish region on the retina lateral to and slightly below the optic disc

14

Optic chiasm

Point at which optic nerve fibers cross in the brain

15

Optic disc

Region at the back of the eye where the optic nerve meets the retina, blind spot

16

Optic nerve

Cranial nerve carrying impulses from the retina to the brain

17

Pupil

Central opening of the eye, surrounded by the iris, through which light rays pass

18

Refraction

Bending of light rays by the cornea, lens, and fluids of the eye to bring the rays into focus on the retina

19

Retina

Light sensitive nerve cell layer of the eye containing photoreceptor cells

20

Rod

Photoreceptor cell of retina essential for vision in dim light and for peripheral vision

21

Sclera

Tough white outer coat of the eyeball

22

Thalamus

Relay center of the brain

23

Vitreous humor

Soft, jelly like material behind the lens in the vitreous chamber

24

Water

Aque/o

25

Conjunctiva (CF)

Conjunctiv/o

26

Pupil cf

Cor/o
Pupill/o

27

Ciliary body cf

Cycl/o

28

Tears, tear duct

Dacry/o

29

Iris cf

Ir/o
Irid/o

30

Cornea cf

Kerat/o
Corne/o

31

Tears

Lacrim/o

32

Eye

Ophthalm/o
Ocul/o

33

Eye, vision

Opt/o
Optic/o

34

Eyelid

Palpebr/o
Blephar/o

35

Optic disc(CF)

Papill/o

36

Lens of the eye

Phac/o
Phak/o

37

Retina cf

Retin/o

38

Sclera cf

Scler/o

39

Uvea

Uve/o

40

Glassy

Vitre/o

41

Dull, dim

Ambly/o

42

Double

Dipl/o

43

Gray

Glauc/o

44

Smaller, less

Mi/o

45

Widen, enlarge

Mydr/o

46

Night

Nyct/o

47

Light

Phot/o

48

Old age

Presby/o

49

Darkness

Scot/o

50

Dry

Xer/o

51

Vision (s)

-opia
-opsia

52

To turn (s)

-tropia

53

Astigmatism

Defective curvature of the cornea or lens of eye

54

Hyperopia

Farsightedness

55

Myopia

Nearsightedness

56

Presbyopia

Impairment of vision due to old age reducing lens accommodation

57

Cataract

Clouding of the lens

57

Chalazion

Small,hard, cystic mass on the eyelid; formed as a result of chronic inflammation of sebaceous gland along margin of eyelid

57

Diabetic retinopathy

Retinal effects caused by diabetes mellitus

Microaneurysms
Hemorrhages
Dilation of retinal veins
Neovascularization

57

Glaucoma

Increased intraocular pressure damages the retina and optic nerve

57

Hordeolum (stye)

Staph infection of a sebaceous gland in eyelid

58

Macular degeneration

Progressive damage to the macular of the retina

59

Nystagmus

Repetitive rhythmic movements of one or both eyes

60

Strabismus

Abnormal deviation of the eye

61

Enucleation

Removal of the entire eyeball

62

Laser photo coagulation

An argon laser creates an inflammatory reaction that seals retinal tears and leaky blood vessels

63

LASIK

Laser to correct errors of refraction by sculpting the cornea

64

Retinal detachment

Two layers of the retina separate from each other

Photopsia
Floaters
Scleral buckle
Pneumatic retinopexy

65

Photopsia

Bright flashes of light

66

Floaters

Vitreous clumps of retina

67

Pneumatic retinopexy

A gas bubble is injected in vitreous cavity to help reattach the retina

68

Visual acuity test

Assesses clarity of vision

69

Keratoplasty

Surgical repair of the cornea

70

Fluorescein angiography

Dye injection to examine blood flow in the retina

71

Ophthalmoscopy

Visual exam of the interior of the eye through dilated pupil

72

Slit lamp microscopy

Magnified view of expanded number of eye structures

73

Visual field test

Measures visual field when eyes are fixed forward

74

Scleral buckle

Suture of a silicone band to the sclera over the detached portion of the retina

75

Phacoemulsification

Ultrasound to break up lens for aspiration for cataract removal

76

Vitrectomy

Removal of vitreous and replacement with a clear solution

77

AMD

Age related macular degeneration

78

HEENT

Head, eyes, ears, nose and throat

79

IOL

Intraocular lens

80

IOP

Intraocular pressure

81

LASIK(abbrev)

Laser in situ keratomileusis

82

OD

Right eye, doctor or optometry

83

OS

Left eye

84

OU

Both eyes

85

PERRLA

Pupils equal, round, reactive to light and accommodation

86

POAG

Primary, open angle glaucoma

87

PRK

Photorefractive keratectomy

88

VA

Visual acuity

89

VF

Visual field

90

Pinna or auricle

Projecting flap of ear

91

Auditory canal

Channel that leads from the Pinna to the eardrum

92

Auditors meatus

Auditory canal

93

Auditory nerve fibers

Carry impulses from the inner ear to the brain

94

Organ of corti

Sensitive auditory receptor area found in the cochlea of the inner ear

95

Ossicle

Small bone of the ear

96

Oval window

Membrane between the middle ear and the inner ear

97

Auditory tube

Channel between the middle ear and nasopharynx, Eustachian tube

98

Auricle

Flap of the ear

99

Cerumen

Waxy substance secreted by the external ear

100

Cochlea

Snail shaped spirally wound tube in inner ear

101

Endolymph

Fluid within the labyrinth of the inner ear

102

Incus

Second ossicle of middle ear

103

Labyrinth

Maze like series of canals of inner ear

104

Malleus

First ossicle of middle ear

105

Perilymph

Fluid contained in the labyrinth of inner ear

106

Semicircular canals

Passages in the inner ear associated with maintaining equilibrium

107

Stapes

Third ossicle of middle ear

108

Tympanic membrane

Membrane between outer and middle ear, eardrum

109

Vestibule

Central cavity of the labyrinth, connecting the semicircular canal and the cochlea

110

Hearing

Acous/o
Audi/o
Audit/o

111

Ear

Aur/o
Auricle/o

112

Cochlea cf

Cochle/o

113

Mastoid process

Mastoid/o

114

Eardrum, tympanic membrane

Myring/o
Tyman/o

115

Ossicle cf

Ossicul/o

116

Ear

Ot/o

117

Eustachian tube

Salping/o

118

Stapes cf

Staped/o

119

Vestibule

Vestibul

120

Hearing s

-acusis
-cusis

121

Instrument for measure s

-meter

122

Ear condition s

-otia

123

Acoustic neuroma

Benign tumor arising from 8th cranial nerve, causes tinnitus, vertigo, dizziness, and decreased hearing

124

Cholesteatoma

Skin cells and cholesterol in a sac in the middle ear

125

Deafness

Loss of ability to hear

126

Meniere disease

Disorder of the labyrinth with elevated endolymph pressure in the cochlea and semicircular canals causing tinnitus, sensitivity to sound, progressive hearing loss, headache, nausea and vomiting

127

Otitis media

Inflammation of the middle ear

128

Otosclerosis

Hardening of bony tissue in the labyrinth

129

Tinnitus

Sensation of noises in ears

130

Vertigo

Sensation of irregular motion from a disease of inner ear or nerve carrying messages from the semicircular canals

131

Audiometry

An electric device used to determine hearing loss by frequency

132

Cochlear implant

Surgically implanted device that allows sensorineural hearing impaired persons to understand speech

133

Ear thermometry

Body temp measured with infrared radiation from the eardrum

134

Otoscopy

Visual exam of the ear with a small, hand- held scope

135

Tuning fork test

Hearing tests using a vibrating fork

136

Rinne

Fork is place against the mastoid bone and in front of auditory meatus

137

Weber

Fork is placed on center of forehead, normal hearing has equal loudness in both ears

138

AD

Right ear

139

AOM

Acute otitis media

140

AS

Left ear

141

EENT

Eyes, ears, nose, and throat

142

ENG

Electronystagmography

143

ENT

Ears nose and throat

144

ETD

Eustachian tube dysfunction

145

PE tube

Pressure equalizing tube

146

SOM

Serous otitis media

147

Paralysis palsy s

-plegic