Amaurosis fugax (vision loss)
About Amaurosis fugax (vision loss)
A sudden loss of vision in one eye caused by a blockage of blood flow to the retinal artery. The retinal artery feeds the retina. The retina captures the light in the back of the eye and transmits these images to the brain. This condition is sometimes followed by a stroke and is considered very serious. The blockage of the retinal artery is usually due to a piece of plaque that builds up in the carotid arteries in the neck. The carotid arteries supply blood to the brain. The plaque buildup is caused by atherosclerosis, and consists of fat deposits and calcium.Symptoms
Sudden loss of vision in one eye. The decreased vision can lasts seconds to hours. The loss of vision can be complete or is sometimes described as a veil being pulled over the eye. The loss of vision is usually painless.Tests & Diagnostics
A history and physical exam will be done. The eyes will be examined and the blockage of the retinal artery can sometimes be seen. A CT scan and/or MRI of the brain will be done. Imaging studies of the neck such as an ultrasound may also be performed to look for blockages of the carotid artery. Blood tests are also routinely examined.OTC sleep aids and supportive treatments
Prescription medications
Conventional treatment summary
Immediate therapy is aimed at removing the blockage of the retinal artery Since time is very important immediate medical assistance is needed. Treatment options include surgery, interventional vascular treatment with clot busting medications, and medications. The medications most commonly prescribed include: aspirin, clopidogrel, and aspirin and dipyridamole. Treatment after an episode of amaurosis fugax, to prevent it from recurring, involves various lifestyle changes, medicines and techniques for reducing the plaque buildup in the carotid arteries.Medical specialties
Ophthalmology · Vascular Surgery · Vascular and Interventional Radiology
This page is educational content, not medical advice. Always consult a qualified clinician for diagnosis and treatment of Amaurosis fugax (vision loss).