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PCP > Med Term 3 Ophthalmology > Flashcards

Med Term 3 Ophthalmology Flashcards

1
Q

Aque/o

A

Water; anterior chambe is the open area of the eye anterior to the lens and is filled with a watery fluid called aqueous humor

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2
Q

Blephar/o

A

Eyelid; upper and lower eyelids are folds of skin that close to protect the anterior surface of eyeball; eye lashes are called cilia

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3
Q

Choroid/o

A

Choroid Layer; Middle layer of wall of eyeball; contains many blood vessels

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4
Q

Conjunctiv/o

A

Conjunctiva; mucous membrane that protects anterior surface of eyeball and turns underneath to line eyelids

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5
Q

Core/o

A

Pupil; opening in the Center of the iris; becomes larger or smaller to control amount of light entering inside of eyeball

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6
Q

Corne/o

A

Cornea; anterior portion of sclera; transparent or allow light through and curved to bend light rays so that they focus on retina

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7
Q

Cycl/o

A

Ciliary Body; ring of muscle around outer edge of lens; attached to lens by suspensory ligaments, pulls on edges of lens to change its shape to focus image onto retina

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8
Q

Dacry/o

A

Tears; watery fluid secreted by lacrimal glands that moisten and cleanse anterior surface of eyeball; lacriumal glands are located superior and lateral to eyeball and under orbital bone; tears collect in corner of eye and flow though lacrimal canals or lacrimal sac

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9
Q

Ir/o

A

Iris

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10
Q

Kerat/o

A

Cornea

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11
Q

Lacrim/o

A

Tears

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12
Q

Ocul/o

A

Eye ; complex sensory organ that allows people to see, wall is made of sclera choroid and retina

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13
Q

Ophthalm/o

A

Eye

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14
Q

-opia

A

Vision

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15
Q

Opt/o

A

Vision

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16
Q

Phac/o

A

Lens; transparent structure lying behind iris and pupil; bends light rays passing through it so that they are focused on retina

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17
Q

Pupill/o

A

Pupil

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18
Q

Retin/o

A

Retina; inner layer of eyeball; contains light receptors called rods and cones

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19
Q

Rods

A

See in dim light and grey tones

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20
Q

Cones

A

See in bright light and in colour

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21
Q

Macula lutea

A

Posterior wall of eyeball, directly opposite lens

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22
Q

Fovea Centralis

A

Small pit in Center of macula, contains only cones and is point of clearest vision

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23
Q

Scler/o

A

Sclera; outermost layer of eye, commonly called white of eye, very fibrous and tough

24
Q

ton/o

A

Tension, pressure

25
Vitre/o
Glassy; refers to gel like shiny substance, vitreous humor, that fills posterior chamber, the large open cavity between lens and retina
26
Accommodation
Ability of eye to adjust various in distance
27
Achromatopsia
Profound inability to see in color from birth; also called color blindness
28
Amblyopia
Loss of vision not due to any disease; not correctable with glasses persons with amblyopia wear a patch one eye to for affected eye to work; commonly called lazy eye
29
Astigmatism
Uneven bending of light rays caused by irregular curvature of cornea; image is fuzzy, corrected with cylindrical lenses
30
Cataract
Lens becomes cloudy or opaque; results in whole vision field becoming blurry; treatment is usually surgical removal of cataracts and replacement of lens with artificial lens
31
Colour vision test
Use of multicoloured charts to determine ability of patient to recognize colour
32
Corneal abrasion
Scraping away of outer layer of cornea
33
Cryoextraction
Procedure to remove lens with cataract using an extremely cold probe
34
Diabetic retinopathy
Development of small hemorrhages and edema in retina as result of diabetes myelitis, dark spots appear in visual field; laser surgery may be necessary for treatment
35
Fluorescein
Bright green fluorescent dye, fluorescent dye, fluorescein, to examine movement of blood through vessels of eye
36
Glaucoma
Condition resulting from increase intraocular pressure, which if untreated, can result in atrophy of optic nerve and blindness; patient notices that vision becomes blurry around edges; treated with medication and surgery
37
Hyperopia
Visual condition in which person can see things in distance but has trouble reading material at close range; also known as farsightedness corrected by convex lens
38
Intraocular lens
Replacing defective natural lens with artificial lens following cataract extraction
39
Laser-assisted in situ keratomilesusis
Correction of myopia using laser surgery to remove minute slices of corneal tissue
40
Laser retinal photocoagulation
Using laser to make pinpoint scars to stabilize a detached or torn retina
41
Macular degeneration
Deterioration of macula kites of retina; patient notices loss of vision in center of visual field
42
Myopia
Visual condition in which person can see things close up but distance vision is blurred; also known as nearsightedness corrected by concave lens
43
Nyctalopia
Poor vision at night or in dim light. Called night blindness
44
Nystagmus
Jerky-appearing involuntary eye movement
45
Optician
Professional trained to make corrective lenses and fit eyeglasses and contact lenses
46
Phacomulsification
Use of high frequency sound waves to break up cataract, which is then removed by suction with needle
47
Photophobia
Excessive sensitivity to light leading to avoidance; not actual fear of lights
48
Photorefractive keratectomy
Use of laser to reshape cornea to improvise visual acuity
49
Radial keratotomy
Surgery with spokelike incision in cornea to flatten it, done to correct nearsightedness
50
Refractive erro
Defect in ability of eye to bend light rays to focus image properly on fovea centralis, occurs in myopia and hyperopia
51
Retinal detachment
Occurs when retina becomes separated from choroid layer this separation seriously damages blood vessels and nerves resulting in blindness
52
Slit lamp microscope
Instrument used in ophthalmology for examining posterior surface of cornea
53
Snellen chart
Chart used for testing visual acuity, 20 feet 20/20 vision
54
Strabismus
Weakness of external eye muscle, corrected wth glasses, eye excel uses and or surgery. Cross eyed
55
Strabotomy
Incision into eye muscles to correct strabismus
56
Stud
Small purulent infection of sebaceous gland of eye
57
Visual acuity test
Measurement of sharpness of patients vision

PCP (14 decks)

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