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CRAO – CENTRAL RETINAL ARTERY OCCLUSION

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Symptoms
  • Sudden painless loss& vision

  • History of transient visual loss

  • Direct Pupilory reflex absent

  • RAPD

  • Peri Orbital eyelid edema

  • Proptoris

  • Ptosis
     

Causes
  • Emboli from carotial artery

    • Cholesterol emboli

    • Calcium emboli

    • Platelet fibril emboli

  • Atherosclerosis related thrombosis at the level of lamina cribrosa

  • Retinal arteritis with obliteration associated with giant cell arteritis) periarteritis associated with polyarteritis nodosa, systemic lupus erythematosus, scleroderma.

  • Angiospasmm

  • Raised intra ocular pressure

  • Thrombophilic disorders

  • Retinal migrane, sickling Haemoglobinopathia, hyper coagulation disorders.

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