Eyes Flashcards

(44 cards)

1
Q

visual acquity test

A

snellen

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2
Q

visual field test

A

blind spots

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3
Q

non contact tonometer

A

air test

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4
Q

carries vision to the brain

A

CN2

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5
Q

keeps eyelids open

A

CN3 (oculomotor)

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6
Q

eyeball movement, rotational up, down, right, and left

A

CN4 (trochlear)

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7
Q

lateral vision to left and right

A

CN6 (abducens)

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8
Q

light rays entering the eye are not focused on the retina, causing blurred vision

A

refactory disorders

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9
Q

ametropia

A

refractive error is present

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10
Q

normal vision without corrective devises. can be surgically induced

A

emmetropia

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11
Q

nearsighted. can see near but not far

A

myopia (near sightedness)

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12
Q

longer length of eyeball causes light rays to fall in front of retina

A

myopia (nearsightedness)

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13
Q

can see far but not close

A

farsightedness (hyperopia)

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14
Q

shorter length of eyeball causes light rays to fall behind retina

A

hyperopia (farsightedness)

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15
Q

irregular curvature of cornea prevents light rays from focusing on a single point

A

astigmatism

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16
Q

function of aging. progressively diminished ability to focus on near objects

A

presbyopia

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17
Q

procedure is most commonly performed laser eye surgery to treat refractory disorders. laser reshaping corneal curvature

A

LASIK

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18
Q

increasing cloudiness or opacity of natural crystalline lens. usually result of again

19
Q

what are some reasons for cataracts

A

diabetes, again, trauma, radiation, CNS disorders

20
Q

risk factors of cataracts

A

UV rays, xray exposure, smoking, poor diet, diabetes, corticosteroids

21
Q

gradual onset, initial complaint of having glare, progressive reading difficulty, PAINLESS

22
Q

diagnostic tests for cataracts

A

visual acuity test (BVA 20/50 or worse) glare test (20/200 or worse), potential acuity meter

23
Q

instruction after cataract surgery

A

don’t drive, don’t poop, don’t bend, protect, don’t sleep on that side, don’t take aspirin with meds, eye protection,

24
Q

the name given to a group of related diseases in which increased IOP places pressure on the optic nerve causing irreversible damage. Optic nerve will slowly die.

25
peripheral vision will initially become decreased
glaucoma
26
risk factors for glaucoma ( know!)
age, ethnic (African, African American, African Caribbean), ocular risk factors, genetics, smoking, alcohol, socioeconomic factors
27
what is the most common glaucoma
open angle
28
glaucoma caused by SLOW blockage of the drainage canals. Increased IOP, symptoms and damage are not noticed
open angle
29
glaucoma results suddenly, sudden rise of IOP, rapid, noticeable symptoms
closed angle
30
adequate anterior chamber space but elevated intraocular pressure. Elevated due to increase in aqueous production and decreased aqueous drainage
open angle glaucoma
31
explain open angle glaucoma
increase in aqueous production and decrease in drainage
32
Medical emergency. Iris is blocked. Angle in anterior chamber too narrow. Rapid increase in IOP.
acute angle closure glaucoma
33
reasons after glaucoma to call DR right away
pain, SOB, nausea or vomiting, loss of vision, nonreactive pupils, reddened sclera, bleeding, discharge, or tingling in the hands or feet
34
don't do after glaucoma
bending, coughing, vomiting, straining, heavy lifting
35
deterioration of the macula over time
macular degeneration
36
most common risk factors for macular degeneration
age, CV disease (perfusion, perfusion), hyperlipidemia, light colored iris, heredity, hypertension, smoking, hyperopia, UV toxicity
37
progression of macular degeneration can be delayed or prevented by taking
high doses of antioxidants: VIt C, Lutein, Zeazanthin, Zinc, and copper. Eat dark, green, leafy and orange/yellow veggies and fruits
38
cataract surgery increases risk. Vitreous gel flows through tear and pools behind the retinal, lifting it
retinal detachment
39
clinical manifestations of retinal detachment
asymptomatic, blurry vision, shower of floaters, flashes of light, curtain or veil, no pain
40
retinal detachment symptom: the patient will notice black/grey spots which are more noticeable agains a light background or blue skies, they are clumps of virtues proteins or clumps of RBC from hemorrhage
shower of floaters
41
patient will notice a shader or curtain or veil like shape come across the visual field
curtain or veil from retinal detachment
42
tiny, synthetic band attached to the outside of the eyeball to gently push the wall of the ye against the detached retina
scleral buckle surgery for retinal detachment
43
meds to block pain receptors and numb. also blink reflex subdued
anesthetic eye drops (proparacaine hydrochloride and tetracaine hydrochloride)
44
Proparacaine Hydrochloride and Tetracaine Hydrochloride are both
topical Opththalmic drops that block sensation and temporary elimination of blink reflex