COVID causes eye problems by attacking the retina, researchers say.
The virus can lead to hazy vision and black spots, known as floaters.
Researchers in Brazil found traces of Covid in the retinas of those who died.
It was previously believed that Covid could impair vision, but experts have now found traces of the virus in the retinas of patients who died.
Dr Allexya Marcos said: “It is now clear that after the initial infection in the respiratory system, the virus can spread throughout the whole body, reaching different tissues and organs.
“The eye may be involved in Covid infection, and many retinal changes have been reported.
“Our study shows Covid viral particles in various layers of the retina, suggesting they may be involved in some of the symptoms patients have reported with their vision.”
The researchers looked at three patients who died of Covid, two men and one woman. The age at death ranged from 69 to 78 years.
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