Studying too hard really does make you short-sighted, with every year spent in education worsening your vision, The Times of London reports.
Going to college could make the difference between needing glasses and getting by without them, according to researchers at the University of Cardiff.
Using genetic data from 68,000 people, the scientists found that those who were genetically predisposed to spend more time in education were more likely to become myopic. They suggested that it was the extra years of schooling that harmed eyesight.
Jez Guggenheim, who led the study published in The British Medical Journal, said: “Compared to someone who left school at 16, a university graduate would, on average, be about one dioptre more myopic. To put this in context, one dioptre is sufficient to make the letters on the lower half of an optician’s letter chart unreadable.”
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