I would tell him to wear glasses by telling the truth that if he does not wear glasses, than he would not be able to do well in his examination. If he will not agree(he might say the reason that he would not look handsome;)) then I will suggest him to wear lens instead. I will convince him by saying that for the sake of his family, he will have to get good marks and for good marks, he will have to wear glasses. Hope this helps:)
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AS i also have a weak eyesight.And when It was a small problem and It would be healed then i also not use to wear glasses. and today i have - 2.8 power in both the eyes. so either tell him to cure now or he will have to face a very great problem in future
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