In children, myopia typically starts as a small problem and gradually grows as the child grows. The flaw wouldn't necessarily get more serious without glasses, it's a matter of knowing that the child has it and possibly needs glasses. Not being able to see the board clearly can be an educational problem.
In my elementary school, we had mandatory semi-informal eye exams. My myopia got diagnosed around grade two or three in one of these exams.
In my elementary school, we had mandatory semi-informal eye exams. My myopia got diagnosed around grade two or three in one of these exams.