Chapter 5: the eye Flashcards
(61 cards)
1
Q
Aque/o
A
H20
2
Q
conjunctiv/o
A
conjunctiva (to bind together
3
Q
corne/o
A
cornea
4
Q
kerat/o
A
cornea
5
Q
ir/o
A
colored circle, iris
6
Q
irid/o
A
colored circle, iris
7
Q
lacrim/o
A
tear
8
Q
dacry/o
A
tear
9
Q
ocul/o
A
eye
10
Q
ophthalm/o
A
eye
11
Q
opt/o
A
eye
12
Q
phac/o
A
lens (lentil)
13
Q
phak/o
A
lens (lentil)
14
Q
phot/o
A
light
15
Q
presby/o
A
old age
16
Q
retin/o
A
retina
17
Q
scler/o
A
hard or sclera
18
Q
vitre/o
A
glassy
19
Q
-opia
A
suffix
condition of vision
20
Q
aque/o
A
water
21
Q
anterior chamber
A
Fluid-filled space between the cornea and iris
22
Q
aqueous humor
A
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 (humor=fluid)
23
Q
conjuctiva
A
Mucous membrane that lines the eyelids and outer surface of the eyeball
24
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
25
iris
Colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil
26
lacrimal gland
Gland located in the upper outer region above the eyeball that secretes tears
27
lens
Transparent structure behind the pupil that bends and focuses light rays on the retina
28
optic nerve
Nerve responsible for carrying impulse for the sense of sight from the retina to the brain
29
posterior chamber
Space between the back of the iris and the front of the vitreous chamber; filled with aqueous humor
30
pupil
Black, circular opening in the center of the iris through which light passes as it enters the eye
31
retina
Innermost layer that perceives and transmits light to the optic nerve
32
vitreous
Jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye
33
diplopia
Double vision
34
exophthalmos
Abnormal protrusion of one or both eyeballs; also spelled exophthalmos
35
lacrimation
Secretion of tears
36
photophobia
Extreme sensitivity to, and discomfort from light
37
astigmatism
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 (stigma=point)
38
hyperopia
Farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina
39
myopia
Nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina
40
presbyopia
Impaired vision caused by old age or loss of accommodation
41
cataract
Opaque clouding of the lens causing decreased vision
42
conjunctivitis
Inflammation of the conjunctiva; also called pinkeye
43
glaucoma
Group of diseases of the eye characterized by increased intraocular pressure that results in damage to the optic nerve, producing defects in vision
44
iritis
Inflammation of the iris
45
keratitis
Inflammation of the cornea
46
retinal detachment
Separation of the retina from the underlying epithelium, disrupting vision and resulting in blindness if not repaired surgically
47
retinitis
inflammation of the retina
48
strabismus
Separation of the retina from the underlying epithelium, disrupting vision and resulting in blindness if not repaired surgically
49
scleritis
Inflammation of the sclera
50
distance of visual acuity
Measure of the ability to see the details and shape of identifiable objects from a specified distance, usually from 20 ft using a Snellen eye chart; normal distance visual acuity is 20/20
51
ophthalmoscopy
Use of an ophthalmoscope to view the interior of the eye
52
tonometry
Uses of a tonometer to measure intraocular pressure, which is elevated in glaucoma
53
cataract extraction
Excision of a cloudy lens from the eye
54
keratoplasty
Corneal transplantation; replacement of a diseased or scarred cornea with a healthy one from a matched donor
55
IOL implant
Implantation of an artificial lens to replace a defective natural lens (eg after cataract extraction)
56
sclera
Tough, fibrous, white outer coat extending from the cornea to the optic nerve
57
eye instillation
Introduction of a medicated solution in the eye, usually administered by a drop (gt) or drops (gtt) in the affected eye or eyes
58
eye irrigation
Washing of the eye with water or other fluid (saline)
59
antibiotic ophthalmic solution
Antimicrobial agent in solution; used to treat bacterial infections (conjunctivitis) and corneal ulcers
60
mydriatic
agent that causes dilation of the pupil; used for certain eye examinations
61
miotic
Agent that causes the pupil to contract (mio=less)
