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WorksheetsRetinal Artery Occlusion Quiz
Total questions: 15
Worksheet time: 8mins
What is the most common cause of Central Retinal Artery Occlusion (CRAO)?
Emboli from the carotid artery
Atherosclerosis-related thrombosis
Angiospasm
Thrombophilic disorders
Which type of emboli is characterized as refractile and orange?
Cholesterol emboli
Calcium emboli
Platelet fibrin emboli
Thrombophilic emboli
What is a rare cause of retinal artery occlusion associated with amaurosis?
Atherosclerosis
Angiospasm
Emboli
Retinal arteritis
What percentage of CRAO cases are classified as central retinal artery occlusion?
5%
90%
60%
35%
What is the typical visual acuity in CRAO cases?
1/60
20/20
3/60
6/60
Which sign is absent in cases of CRAO?
Fundus examination changes
Visual acuity reduction
Direct pupillary reflex
Relative afferent pupillary defect
What is the appearance of the retina in CRAO during fundus examination?
Milky white due to ischaemic oedema
Yellowish discoloration
Normal color
Bright red
What is the cherry-red spot in CRAO indicative of?
Neovascularization
Vascular choroid shining through
Retinal detachment
Intraocular pressure increase
Which treatment is recommended for acute episodes of CRAO within 24 hours?
Oral medications only
Observation only
Aggressive treatment
Immediate surgery
What is the role of intravenous mannitol in CRAO management?
To increase intraocular pressure
To lower intraocular pressure
To induce vasodilation
To enhance visual acuity
Which systemic condition is particularly important to review after CRAO management?
Cardiovascular conditions
Diabetes
Neurological disorders
Respiratory diseases
What is a potential delayed complication of CRAO?
Macular degeneration
Retinal detachment
Cataract formation
Neovascular glaucoma
What is the typical duration retinal tissue can survive ischaemia in CRAO?
30-60 minutes
90-100 minutes
Less than 30 minutes
120-150 minutes
Which imaging study shows hyperreflectivity with thickening of the inferior retina?
OCT
X-ray
Fundus fluorescein angiography
Autofluorescence imaging
What is the primary symptom of central retinal artery occlusion?
Color vision changes
Sudden painless loss of vision
Flashing lights
Gradual vision loss
