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Updated: May 25, 2025
"The main cause of myopia is to be found in the very conditions under which children are gathered together in schools: insufficiency of light, the over-small type common in school-books, the frequent use of the blackboard, on which the teacher is not always careful to make the size of the characters he traces proportionate to the distance at which they have to be read, are so many causes of ocular fatigue.
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