Up to 90% of school leavers in major Asian cities are suffering from myopia(short-sightedness)and scientists are blaming their academic lifestyles. Natural light exposure is just one potential factor in a child's eyesight. The time children spend outdoors could be linked to a reduced risk of being short-sighted, research suggests. Researchers say the "extraordinary rise" in the problem is being caused by students working very hard in school and missing out on outdoor light. They also found a strong link between short-sightedness and close reading. The work of Professor Ian Morgan, from the Australian National University in Canberra , and colleagues, suggest the condition - also known as myopia - is due more to environmental than genetic factors. The scientists told The Lancet medical journal that up to one in five of these students could experience severe visual impairment and even blindness. According to the research, the problem is being caused...
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