Lijia Zhang, a writer and social commentator in Beijing, told the BBC that high expectations on children were a factor
Up to 90% of school leavers in major Asian cities are suffering from myopia - short-sightedness - a study 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.
The scientists told the Lancet that up to one in five of these students could experience severe visual impairment and even blindness.
In the UK, the average level of myopia is between 20% and 30%."