Eye Emergencies pt.2

Question 1

why will ppl not complain of symptoms of cataracts?

Answer 1

in non-dominant eye

Question 2

cataracts asking hx?

Answer 2

driving?
spouse driving?
night driving
reading

Question 3

2 kinds of acute vascular emergencies?

Answer 3

embolism

ischaemia

Question 4

collaterals to retina?

Answer 4

nope: end organ

Question 5

retinal artery and branch artery embolism will present how?

Answer 5

sudden loss of vision in one eye

Question 6

how to treat retinal artery embolism?

Answer 6

ocular massage
find source
exclude temporal arteritis
commence aspirin

Question 7

usual source of embolus for retinal artery?

Answer 7

carotid bifurcation

Question 8

hyperbaric chamber for retinal emboli?

Answer 8

useless

Question 9

what does the central retinal artery occlusion look like?

Answer 9

whole retina is white-ish with cherry red spot

Question 10

causes of rentral retinal artery occlusion?

Answer 10

calcific emboli
giant cell arteritis
atheroma

Question 11

anterior ischaemic optic neuropathy cause?

Answer 11

giant cell arteritis

Question 12

giant cell arteritis clinical symptoms

Answer 12

headaches
scalp tenderness
jaw claudication
polymyalgia rheumatica (limb girdle aches)

Question 13

giant cell arteritis treatment?

Answer 13

1-1.5mg/kg steroids short term

Question 14

what is jaw claudication?

Answer 14

pain when chewing cause the muscle moves the inflamed artery

Question 15

Hallucinations spots and flickers cause?

Answer 15

separation of vitreous and retina in myopia/blunt trauma or old age causes traction on retina: get flickers

Question 16

where do you normally get retinal tears?

Answer 16

periphery of retina

Question 17

how to differentiate cerebral infarction vs. retinal tear flickers?

Answer 17

homonymous

Question 18

what causes whizzes and zigzags in vision?

Answer 18

migraine most common

ischaemia can

Question 19

older people with migraine experience how?

Answer 19

more aura/hallucinations, maybe less headaches

Question 20

origin of migraine hallucinations?

Answer 20

visual cortex

Question 21

when to treat migraine?

Answer 21

only when headaches are disabling

Question 22

flashes causes

Answer 22

vitreous separation/mobility  (uniocular)
retinal ischaemia (uniocular)
cortical infarction (binocular)

Question 23

retinal ischaemia could be prodrome for?

Answer 23

giant cell arteritis

Question 24

blob in the vision could be?

Answer 24

bleeding into the vitreous

Question 25

what does retinal detachment experience look like?

Answer 25

dark curtain coming up or down sudden or over days

Question 26

what are charles bonnet illusions?

Answer 26

neurological, in older ppl who have poorer vision, complex illusions as their brain doesn’t suppress

Question 27

transient visual loss likely to be? difference between platelet and cholesterol

Answer 27

embolic - platelets(30s) from carotid bifurcation

-cholesterol (lasts minutes)

Question 28

floaters obscuring fundus could be?

Answer 28

vitreous hemorrhage

Question 29

Cataracts need to wait to treat?

Answer 29

Nope