A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?
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Solution
The defect is myopia that causes distant objects to appear blurred, while close objects can be seen clearly.
Myopia is corrected by using a concave lens which is placed in front of a myopic eye, moving the image back to the retina and making it clearer.