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Amaurosis fugax is a temporary loss of vision in one or both eyes due to a lack of blood flow to the retina. Amaurosis fugax is often a symptom, not a health condition. It reflects other conditions that affect the nerves or blood flow to the eyes.
Amaurosis fugax can affect patients at any age. It can be managed by reducing your risk factors. Please discuss with your doctor for further information.
What are the symptoms of amaurosis fugax?
Symptoms include the sudden loss of vision in one or both eyes. Depending on the cause, the duration of vision loss can vary. Afterward, vision returns to normal. Some people describe the loss of vision as a gray or black shade coming down over the eye.
Etiology | Duration |
Migraine with aura | 10 to 20 minutes |
Retinal migraine | 10 to 20 minutes |
Vertebrobasilar insufficiency | Seconds |
Retinal emboli | 3 to 5 minutes |
Papilledema | Seconds |
Seizure | (Ictal) 3 to 5 minutes; (postictal) 10 to 20 minutes |
There may be some symptoms not listed above. If you have any concerns about a symptom, please consult your doctor.
When should I see my doctor?
You should contact medical help immediately:
What causes amaurosis fugax?
Amaurosis fugax can occur from a number of different causes. Most often, the cause is by a blockage in the veins that prevent blood from entering the retina. This blockage is build up from plague that travels from a larger artery, such as the carotid artery in the neck or an artery in the heart, to an artery in the eye.
Amaurosis fugax can also occur because of other disorders such as:
What increases my risk for amaurosis fugax?
As plague build up is often the biggest cause of amaurosis fugax, the higher your cholesterol and fat levels are, the more risk you have. Risk factors include:
The information provided is not a substitute for any medical advice. ALWAYS consult with your doctor for more information.
How is amaurosis fugax diagnosed?
The health care provider will perform a complete eye and nervous system exam. In some cases, an eye exam will reveal a bright spot where the clot is blocking the retinal artery. Tests that may be done include:
How is amaurosis fugax treated?
Treatment of amaurosis fugax depends on its cause. When amaurosis fugax is due to a blood clot or plaque, the concern is to prevent a stroke with self-management tips.
Your doctor may also recommend:
If a large part of the carotid artery appears blocked, carotid endarterectomy surgery is done to remove the blockage. The decision to do surgery is also based on your overall health.
What are some lifestyle changes or home remedies that can help me manage amaurosis fugax?
When amaurosis fugax is due to a blood clot or plaque, these steps can help to prevent it:
Other management tips for amaurosis fugax include:
If you have any questions, please consult with your doctor to better understand the best solution for you.
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