Covid-19: blurred vision, clogged blood vessels… can the virus cause an ‘eye punch’?

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In the United States, researchers have found a link between possible Covid-19 contamination and occlusions observed in the eye. Partial or even complete loss of vision has been observed in some contaminated patients.

It is a virus that mutates and its effects on our bodies are constantly changing. We now know what effects an infection with Covid-19 can have on the respiratory tract or on our ENT system. Much less is known about the eyes. Scientists from the University of Michigan (USA) have investigated this question and have found a link between infection with the virus and several potentially irreversible and serious eye diseases.

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The study was published on April 14 on the Scientific Publications website JAMA network, provides a strong link between potential contamination and what is known as central artery occlusion (ROAC). The results ? Blurred vision or sudden loss of vision in one eye. Researchers showed that this pathology was almost 29.9% more common over a period of 2 to 26 weeks after contamination. The same observation for retinal vein occlusions, cases of which increase by 47% between 2 and 26 weeks after contamination.

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These pathologies are synonymous with vascular accidents in the eyes. According to observations, the blood vessels in the retina are blocked by clots or fatty deposits: this is known as “eye stroking”. This affects vision, and for good reason: the retina is the part of garlic that receives light and then relays the images to the brain. These post-contamination occlusions can result in partial or total loss of garlic vision.

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Covid-19 affects veins more than arteries, scientists say. Then therapeutic management might be possible. Many patients who have experienced partial deterioration in their vision have experienced a gradual return to normal. No treatment has been developed for those who have experienced complete loss of threshold vision.

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Previous studies have shown that Covid-19 is likely to infect the eyes: work by researchers at the Adolphe de Rothschild Foundation Hospital has made it possible to observe the presence of nodules in the macula – the area of ​​the retina that is located located at the bottom of the eye. This is a sign of possible direct eye damage. The researchers point out that Covid-19 would be able to directly infect the eye through a protein (ACE2) that is necessary for the virus to infect an organism.

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