Educated People More Likely to Be Short-Sighted

Educated People More Likely to Be Short-Sighted

Using a technique called Mendelian randomisation, they analysed 44 genetic variants associated with myopia and 69 genetic variants associated with years of schooling for 67,798 men and women aged 40 to 69 years from the UK Biobank database. Having said that, the study found that there was not enough evidence to link the prevalence of myopia to people remaining in education or extending their years of study.

THURSDAY, June 7, 2018 (HealthDay News) - More time spent in education seems to be a causal risk factor for myopia, according to a study published online June 6 in The BMJ.

Carried out by researchers at the University of Bristol and Cardiff University, the study set out to determine whether education is a direct (causal) risk factor for short-sightedness, also known as myopia, or whether myopia is a causal risk factor for more years in education.

Longer hours of studying causes myopia or short-sightedness, a new study finds.

Every further 12 months in schooling elevated the chance of myopia by -0.27 dioptres. This suggests that a United Kingdom university graduate with 17 years in education would, on average, be one dioptre more myopic than an individual who left school at 16 with 12 years of education. It's been observed that children with myopia are more studious, or socioeconomic position and a higher level of education leads to myopia. The distinction is sufficient to imply needing glasses for driving. However, being predisposed to myopia did not have any noticeable effect on one's education. The researchers found "strong evidence" that education was one of the drivers behind higher myopia rates. It is not known whether "Bright Light" classrooms provide protection against myopia and replicate the effects of increasing time spent outdoors and the research team suggest that future studies could look at whether this intervention works against myopia. Children from developed East and Southeast Asian countries regularly say that they spend less time outdoors than children from Australia or the U.S. and randomised controlled trials have shown that more time spent outdoors during childhood protects against the development of myopia.

Consultants pointed to the expertise in East Asia, the place education means early intense instructional pressures and little time for play open air. For example, UK Biobank participants have been shown to be more highly educated, have healthier lifestyles, and report fewer health issues compared with the general UK population, which may have affected the results.

They examined the many specific genetic variants linked to myopia and to the genetic predisposition to time spent in school, including higher I.Q. and other factors. However, there was little evidence that this could explain their findings.

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