Up to 90 per cent of students leaving secondary school in east Asian cities suffer from nearsightedness caused by rigorous studying and lack of sunlight, according to a new study published in The Lancet, Matt McGrath of the BBC reports.
Nearsightedness, or myopia, is characterised by blurry vision beyond six-and-a-half feet.
Eye experts recommend between two and three hours of exposure to daylight to help maintain healthy eyes.
The scientists, led by Dr. Ian Morgan of Australian National University, also found that between 10 and 20 per cent of these students have developed high myopia — which can lead to visual impairment and blindness.
The average level of myopia in a population is around 25 per cent. Dr. Morgan told McGrath that the extraordinary rise of myopia in east Asia seems to have occurred in the last two generations.
Dr. Morgan also said that immense educational pressures combined with the practice of lunchtime naps for children in South East Asia puts pressure on the students’ eyes without providing the necessary counterbalance.
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