Central retinal artery occlusion (CRAO) is a severe eye condition that occurs when the major retinal artery, responsible for supplying blood to the retina, becomes blocked. This blockage leads to a sudden and severe loss of vision in the affected eye.
The main symptom of CRAO is a sudden and painless loss of vision in one eye, resulting in a complete or near-complete visual loss. The onset is typically rapid and may occur within seconds or minutes. Some individuals may experience a curtain-like effect or a darkening of vision before the complete loss.
CRAO is most commonly caused by a blood clot or embolus that blocks the central retinal artery. The embolus typically originates from the carotid artery or the heart and travels through the bloodstream, eventually lodging in the smaller vessels of the eye. Other less common causes include inflammation, compression of the artery, or vascular diseases affecting the blood vessels in the eye.
Certain health conditionings such as advanced age, hypertension (high blood pressure), diabetes, smoking, hyperlipidemia (high cholesterol), and a history of previous transient ischemic attacks (TIAs) or stroke can cause CRAO.
Retina Surgeon (CEO)
“Retinal Artery Occlusion causes sudden blindness in the eye and is an emergency. Reaching a retina specialist within one hour can be the difference between treatment and permanent damage.”
Central retinal artery occlusion treatment aims to restore blood flow in the retina and prevent further damage in vision loss. Although there is no treatment if the vision gets completely lost, a certain vision level can still be regained. It also depends on the issue's duration and the damage level in the retina. These are the best treatments to save the eyes from complete blindness:
Central Retinal Artery Occlusion diagnosis involves a comprehensive evaluation of the patient's medical history, symptoms and a thorough eye examination. These are the common diagnostic procedures:
The growth of abnormal blood vessels in the iris, retina, or angle are common complications. It can result in further vision loss or pain in the affected area of the eye. These irregular blood vessels cannot Ibe found in patients treated with tPA or hyperbaric oxygen. Therefore, these are treated with anti-VEGF agents or surgery if they increase to vitreous hemorrhage or uncontrolled glaucoma.
Although the visual loss is quite severe and entirely depends on the amount of retina damage. However, with the best treatments, such as cilioretinal artery and visual acuity, 20/50 or more recovery happens in over 80% of eyes.
CRAO is generally connected to diabetes or heart problems, but they don't directly cause that. Yet, a safe and preventive step is to take care of your heart by doing these things:
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