A retinal artery occlusion is a condition in which an arterial vessel within the retina becomes blocked, leading to mild or severe vision loss. It is more common in the elderly and often associated with high blood pressure, diabetes, history of smoking, or carotid vessel disease. In some cases, warning signs of transient visual loss may precede the occlusion. This is referred to as ‘amarosis fugax’ and warrants an urgent medical evaluation. Artery occlusions, when they occur, are difficult to treat as vision loss can be permanent. Therefore, it is important for patients with known risk factors to see their medical doctor regularly.
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