Vision problems Flashcards

1
Q

cataract

A

cloudy lens, scatters light
painless, blurry vision

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2
Q

is cataracts a gradual or sudden onset?

A

gradual onset

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3
Q

if cataracts are left untreated?

A

blindness

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4
Q

risk factors of cataracts

A

older age
eye trauma
congenital risk
Diabetes
Corticosteroid use
Smoking, alcohol consumption

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5
Q

S/Sx cataracts

A

painless
Unilateral or bilateral
Blurry vision, halo around lights
Altered color perceptions
glare issues at night
Decreased accommodation

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6
Q

Treatment for cataracts

A

Surgery

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7
Q

Diabetic retinopathy

A

Increases over the age of 40 with diabetes

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8
Q

Nonproliferative diabetic retinopathy

A

capillary micro-aneurysms
retinal swelling
Hard exudate
Macular, edema; plasma leaks from macular blood vessels
Capillaries rupture, dot or blot hemorrhaging

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9
Q

proliferative diabetic retinopathy

A

Advanced retinopathy
New blood vessels are fragile and leaky

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10
Q

Hypertensive retinopathy cause

A

increased blood pressure
Blockages in retinal blood vessels
Initially, no vision change

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11
Q

Severe hypotension can lead to?

A

Sudden vision loss, due to swelling of optic disc and nerve

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12
Q

Treatment for hypertension retinopathy

A

treat and control the disease
Follow up with retinologist more frequently
Normal vision restored with hypertension treatment

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13
Q

retinal detachment

A

Retina has tear or leak
Vitreous humor, fluid followers behind the retina

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14
Q

risk factors for retinal detachment

A

Usually spontaneous
More likely in people with myopia (can’t see far)
Over 40 years old
Trauma to the head
eye tumors
History/complication of cataract surgery

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15
Q

S/Sx retinal detachment

A

Sudden
Unilateral vision loss
Painless
May see floaters
Flashes of light

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16
Q

Macular degeneration

A

Most common cause of irreversible vision loss in people over 60 in the US

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17
Q

Dry (non-exudative)

A

Most common, 90%
Yellow deposits, in retinal pigment epithelium

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18
Q

Wet (exudative)

A

less common, only 10%
Growth of New blood vessels in an abnormal location of retina

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19
Q

Causes of macular degeneration

A

Retinal aging

20
Q

Risk factors for macular degeneration

A

Family Hx
Genetics
UV light (pilots, flight attendants)
Hyperopia (can’t see close)
Smoking
Light colored eyes

21
Q

what is protective against macular degeneration?

A

Dark, leafy vegetables

22
Q

early s/sx of macular degeneration

A

None

23
Q

late s/sx of macular degeneration

A

blurred vision
Blindspot’s
Distorted vision

24
Q

Another word for Blindspot’s

A

Scotomas

25
Q

Another word for distorted vision

A

metamorphopsia

26
Q

does vision improve in macular degeneration?

A

No, Limited treatment

27
Q

glaucoma

A

Elevated intraocular pressure with vision changes or optic nerve damage

28
Q

is glaucoma chronic or acute?

A

chronic condition
Both eyes affected

29
Q

Open angle glaucoma

A

Can have some flow through the eyes

30
Q

risk factors for open angle glaucoma

A

Elevated intraocular pressure
Older age
African-Americans (3-4x)
Family history
Myopia
Diabetes, hypertension, migraines

31
Q

Patho of glaucoma

A

Abnormal trabecular meshwork
Reduced drainage into canal of schlemm
Results in increased intraocular pressure in vision problems

32
Q

S/Sx open angled glaucoma

A

initially, no vision changes
Progressive loss of sight
vague eye pain
halos around lights
Tunnel vision

33
Q

Close angled glaucoma

A

much less common
Abnormal angle between iris in later cornea
Outflow is blocked when people is dilated

34
Q

other ways to say close angle glaucoma

A

Acute angle closure glaucoma
Narrow angle glaucoma

35
Q

Risk factors for close angle glaucoma

A

asian-Americans
Females
Hyperopia
Family history
Older age

36
Q

is closed angle glaucoma, an emergency?

A

yes, outcome is based on time from onset to treatment

37
Q

what can trigger close angle glaucoma?

A

Anticholinergic drugs

38
Q

S/sx close angle glaucoma

A

Typically unilateral, other, eye at risk
Severe eye pain
N/V
blurry vision, halos
Red eyes
Dilated pupils, non-reactive to light
Cloudy cornea

39
Q

how does glaucoma affect blindness?

A

Due to increased intraocular pressure
More pressure on inner eye structures
Decrease blood flow to optic nerve
Nerve fiber death

40
Q

what is the treatment for acute angle crisis?

A

Surgery

41
Q

should you keep optic topical agents localized, or spread around?

A

Localized

42
Q

what pressure should you use with installation?

A

Nasolacrimal pressure, hold for 2 minutes

43
Q

Ménière’s disease

A

Endolymphatic hydrops
Episodic disorder of middle ear
Can be unilateral or bilateral

Excessive endolymph and pressures in membranes
Disrupts, vestibular, balance, and hearing function

44
Q

S/Sx Ménière’s disease

A

recurring episodes of vertigo
N/V
Hearing loss
Ringing in ears – tinnitus
Feeling of fullness

45
Q

treatment for Ménière’s disease

A

Symptomatic
Changes in diet, salt restriction
Treat stress
Drugs to help with dizziness

46
Q

Who is Ménière’s disease most common in?

A

20-40 years

47
Q

what part of the ear is infected in Ménière’s disease

A

Middle ear