Coronavirus: Eyeglasses prevent infection with coronavirus

Beijing: Daily wearer Glasses May be less likely to get infected with a novel Coronavirus, Says scientists seeking larger studies to assess the relationship between risk and eye protection COVID-19 contract..

Single-center study published in the journal JAMA Ophthalmology, 276 hospitalizations evaluated COVID-19 patients At Suzhou Zendudu Hospital in China, long-term eyeglasses were found to be relatively rare among study participants.

Based on this observation, researchers, including those at the Second Hospital, Nanchang University In China, it is estimated that wearing glasses for more than 8 hours a day can prevent new coronavirus infections.

They hypothesized that this was because the glasses acted as a barrier, reducing the frequency with which people touch their eyes.

“Everyone who wore glasses for more than 8 hours a day had myopia, including 16 of the 276 patients. Based on previous studies, the proportion of myopia patients in Hubei was 31.5%. “The study said.

According to the researchers, the proportion of people with myopia or myopia was much higher in the general population than in people with COVID-19.

However, citing the shortcomings of this study, scientists said the study was conducted only in a single facility with a small sample size, limiting the expansion of results to a larger population.

They believe that the results need to be validated by multi-specimen, multicenter studies.

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Eyeglasses do not provide as much eye protection as goggles or face shields, but act as a partial barrier to reduce virus inoculation in a manner similar to that observed with cloth masks.

According to the researchers, data on the proportion of spectacle wearers in the general population used as a reference in the study was obtained from previous literature and is not currently estimated.

This old dataset also included an analysis of myopia patients in the general population in 1985.

They said that the myopia rates observed in this dataset also included a small number of people with myopia who did not wear spectacles.

“The lack of information about these people has partially affected the integrity and validity of our data,” scientists said.

In the commentary attached to the study, epidemiologist Lisa L. Malagakiss Johns Hopkins University School of Medicine In the United States, he said the results could be misleading because of confounding variables.

“For example, if wearing glasses is associated with another unknown unmeasured factor associated with the risk of COVID-19,” Malagakiss said, there may be an alternative explanation for the findings. It was.

“From an epidemiological point of view, it is tempting to conclude from this study that everyone needs to wear eyeglasses, goggles, or face shields in public to protect their eyes and body from COVID-19, Care must be taken not to speculate on causality, from a single observational study, “she wrote in the commentary.

However, epidemiologists said eyeglasses could serve as a barrier against such infections from droplets and contaminated hands.

“Eyeglasses do not provide as much eye protection as goggles and facial shields, but may serve as a partial barrier to reducing virus inoculation in a similar manner as observed with cloth masks. “She said.

Malagakiss draws attention to the interpretation of the study, wearing goggles, face shields, or even eyeglasses increases the risk of frequent eye contact, “when removing, replacing, or adjusting eye protection. If someone who can contaminate the eyes is not accustomed to wearing them. ”

Whether she has the benefit of wearing eyeglasses or other forms of eye protection in public, in addition to wearing a mask, keeping a physical distance to prevent contact with the virus He said more research is needed to determine.

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