What Is a Retinal Artery Occlusion?

Most people know that high blood pressure and other heart diseases pose risks to your overall health. But many do not know that that high blood pressure can affect vision by damaging the arteries in the eye.

A retinal artery occlusion (RAO) is a blockage in one or more of the arteries of your retina. The blockage is caused by a clot or occlusion in an artery, or a build-up of cholesterol in an artery. This is similar to a stroke.

There are two types of RAOs:

  • Branch retinal artery occlusion (BRAO) blocks the small arteries in your retina.
  • Central retinal artery occlusion

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