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CRAO – CENTRAL RETINAL ARTERY OCCLUSION

Symptoms
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Sudden painless loss& vision
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History of transient visual loss
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Direct Pupilory reflex absent
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RAPD
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Peri Orbital eyelid edema
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Proptoris
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Ptosis
Causes
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Emboli from carotial artery
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Cholesterol emboli
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Calcium emboli
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Platelet fibril emboli
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Atherosclerosis related thrombosis at the level of lamina cribrosa
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Retinal arteritis with obliteration associated with giant cell arteritis) periarteritis associated with polyarteritis nodosa, systemic lupus erythematosus, scleroderma.
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Angiospasmm
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Raised intra ocular pressure
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Thrombophilic disorders
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Retinal migrane, sickling Haemoglobinopathia, hyper coagulation disorders.
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