Health
Heat waves may increase risk of eye stroke: what's the problem?
Delhi has been hit by extremely hot weather in recent weeks, with temperatures hitting over 50 degrees Celsius, while heatwaves in other parts of the country have caused people to faint from dehydration.
Extreme heat increases the risk of several diseases, including eye stroke. Can lead to vision loss.
Ocular infarction, also known as ocular infarction, refers to the sudden loss of vision caused by insufficient blood flow to the tissues in front of the optic nerve.
The medical term for this condition is “anterior ischemic optic neuropathy” (AION), which is similar to a stroke in which blood flow is blocked by a blood clot or narrowing of a blood vessel, but it occurs in the eye.
The main cause of ocular stroke is blockage or narrowing of the blood vessels that supply blood to the optic nerve, which can be due to arteriosclerosis (buildup of fatty deposits in the arteries), embolism (a blood clot that travels to the eye), giant cell arteritis (an inflammatory disease affecting blood vessels), high blood pressure or diabetes.
Symptoms of an ocular stroke include a sudden, painless loss of vision in one eye, a shadowing or darkening of your vision, or a partial or complete loss of vision (such as being able to see only the top or bottom half of what is in front of you).
How does heat affect eye stroke?
Although extreme heat itself does not directly cause eye stroke, it may contribute to conditions that increase the risk of eye stroke.
Prolonged exposure Extreme heat can cause dehydrationWhen blood is too thick, it can cause the small blood vessels in your eyes to become clotted, which can lead to eye stroke.
Additionally, when your body loses fluid, your blood becomes more viscous, which slows blood flow and makes blood more likely to clot, which can travel to your eyes and cause blockages.
According to the Centers for Disease Control and Prevention (CDC), extreme heat can put additional stress on your cardiovascular system, forcing your body to use more energy to stay cool, which can lead to increased heart rate and blood pressure.
For people who already have heart problems, this added strain can increase the risk of eye stroke.
Severe heat stroke can also cause inflammation throughout the body and damage to blood vessels, including those that supply blood to the optic nerve.
This increases the risk of blood clots forming and causing eye stroke.
What are the precautions?
To reduce your risk of eye stroke in summer, stay hydrated by drinking plenty of water and avoid prolonged exposure to extreme heat, especially during peak hours.
Manage any underlying medical conditions carefully, especially in hot weather. Seek shade and air-conditioned environments where possible.
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Sources 2/ https://www.indiatoday.in/health/story/heatwave-can-increase-risk-of-eye-stroke-2546241-2024-05-31 The mention sources can contact us to remove/changing this article |
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