Central retina arterial occlusion (CRAO) is a blockage from a blood clot or fat deposit occurring in one of the small arteries carrying blood to the retina, the layer of tissue in the back of the eye that senses light. CRAO affects the entire eye causing sudden blurring or loss of vision due to the lack of oxygen.

To date, hyperbaric oxygen therapy is the only treatment option for CRAO with favorable results. To achieve optimal outcomes, it’s best to begin hyperbaric oxygen therapy within eight to 24 hours of onset before the retinal tissue is irreparably damaged.

CRAO patients benefit from hyperbaric oxygen therapy by its ability to:

• Supply oxygen to the retinal tissue to maintain its life while blood flow is restored (either medically assisted or spontaneous).

• Increase the chance of reversing the loss of vision if retinal tissue isn’t irreparably damaged with cell death and necrosis in the inner layers of the retinal artery.

WHEN TO REFER TO HYOX:

• Immediately, preferably within eight (8) hours but no more than 24 hours, for best results. Refer up to two weeks of the occlusion for a chance to regain some visual acuity (light/dark).

Download the Central Retinal Arterial Occlusion Condition Flyer