Central retinal artery occlusion and central retinal venous occlusion are rare entities of retinal vascular
disorders that can cause sudden visual loss and combined occurrence results in devastating outcomes.
The role of protein C deficiency is well established in venous thrombosis however the occurrence of
concurrent arterial thrombosis is rare and the combination in association with carotid artery occlusion is
an exceptionally rare occurrence. Here we report a case of protein C deficiency presenting as combined
central retinal artery occlusion and central retinal venous occlusion with bilateral carotid artery disease