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Professional Practice > Exam : Ch. 10 > Flashcards

Exam : Ch. 10 Flashcards

1
Q

Anterior Chamber

A

fluid-filled space between the cornea and iris

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2
Q

Aqueous Humor

A

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

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3
Q

canal of Schlemm

A

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

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4
Q

ciliary body

A

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

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5
Q

ciliary uscle

A

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

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6
Q

ciliary processes

A

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

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7
Q

conjunctiva

A

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

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8
Q

cornea

A

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

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9
Q

iris

A

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

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10
Q

macula

A

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

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11
Q

optic nerve

A

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

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12
Q

posterior chamber

A

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

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13
Q

pupil

A

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

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14
Q

retina

A

innermost layer that perceives and transmits light to he optic nerve

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15
Q

cones

A

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

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16
Q

rods

A

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

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17
Q

sclera

A

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

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18
Q

trabecular meshwork

A

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

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19
Q

vitreous

A

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

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20
Q

blepharospasm

A

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

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21
Q

diplopia

A

double vision

22
Q

exophthalmos/us

A

abnormal protrusion of one or both eyeballs

23
Q

lacrimation

A

secretion of tears

24
Q

nystagmus

A

involuntary, rapid, oscillating movement of the eyeball

25
Q

photophobia

A

extreme sensitivity to, and discomfort from, light

26
Q

scotoma

A

blind spot in vision

27
Q

astigmatism

A

distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina

28
Q

hyperopia

A

farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina

29
Q

myopia

A

nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina

30
Q

presbyopia

A

impaired vision caused by old age or loss of accommodation

31
Q

accommodation

A

ability of the eye to adjust focus on near objects

32
Q

amblyopia

A

decreased vision in early life because of a functional defect that can occur as a result of strabismus, refractive errors

33
Q

aphakia

A

absence of the lens, usually after cataract extraction

34
Q

blepharitis

A

inflammation of the eyelid

35
Q

blepharochalasis

A

baggy eyelid

36
Q

blepharoptosis

A

drooping of the eyelid; usually caused by paralysis

37
Q

cataract

A

opaque clouding of the lens causing decreased vision

38
Q

conjunctivitis

A

pinkeye

39
Q

diabetic retinopathy

A

disease of the retina in diabetics characterized by capillary leakage, bleeding, and new vessel formation

40
Q

glaucoma

A

group of diseases of the eye characterized by increased intraocular pressure that results in damage to the optic nerve, producing defects in vision

41
Q

hordeolum

A

sty; an acute infection of the sebaceous gland of the eyelid

42
Q

keratitis

A

inflammation of the cornea

43
Q

macular degeneration

A

breakdown or thinning of the tissues in the macula, resulting in partial or complete loss of central vision

44
Q

pterygium

A

fibrous, wing-shaped growth of conjunctival tissue that extends onto the cornea, developing most commonly from prolonged exposure to UV light

45
Q

retinal detachment

A

separation of the retina from the underlying epithelium, disrupting vision and resulting in blindness if not repaired surgically

46
Q

keratoplasty

A

corneal transplantation; replacement of a diseased or scarred cornea with a healthy one from a matched donor

47
Q

laser-assisted in situ keratomileusis (LASIK)

A

a technique using the excimer laser to reshape the surface of the cornea to correct refractive error

48
Q

antibiotic ophthalmic solution

A

antimicrobial agent in solution; used to treat bacterial infections

49
Q

mydriatic

A

agent that causes dilation of the pupil; used for certain eye examinations

50
Q

miotic

A

agent that causes the pupil to contract

51
Q

lens

A

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

52
Q

scleritis

A

inflammation of the sclera

Professional Practice (2 decks)

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