CRAO – CENTRAL RETINAL ARTERY OCCLUSION

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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