Myopia a major burden in East Asian youth

Professor Ian Morgan, from the Australian Research Council Centre of Excellence in Vision Science, Australian National University, estimated that 10–20% of these individuals have high myopia, which can eventually lead to vision loss, visual impairment and blindness.

While myopia was previously thought to have a mainly genetic basis, or been linked to intensive study, more recent evidence implicated environmental factors, including a protective effect of time spent outdoors, he said.

A study comparing children of Chinese ancestry in Australia and Singapore found that time spent outdoors was a

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