Branch Retinal Artery Occlusion

  • Ischemic swelling of portion of retina served by occluded branch of retinal artery
  • In this case, occlusion occurred because of embolus, visible as yellow-white particle at vessel bifurcation
  • Patient reported sudden painless cloudy vision in upper field of vision of left eye
  • History of sudden painless loss of upper field leads you there
  • Ischemic retina has lost its transparency, now appearing gray instead of transmitting orange color of underlying choroid
  • Interpret this finding as indication of embolism from cervical carotid artery or heart
  • Refer to ophthalmologist urgently if vision loss came on recently
  • Further embolization causing stroke could be imminent and potentially prevented with urgent medical attention