Retinal Venous Changes

Permanent CRAO with cilioretinal artery sparing
Retinal venous attenuation is present in 29% of patients within 1 month of onset
Permanent CRAO
Retinal venous attenuation is present in 18% of patients within 1 month of onset
Transient CRAO
Retinal venous attenuation is present in 6% of patients within 1 month of onset