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Show t m m , ""--" " ' ' ? j , Eyestrain of Schoor Llfo. fM Examinations of over 200,000 palrv (3, of oyos and careful tabulation of the . $ results in tho Boston public schools. ?, show that nearly all children enter th f primary school with normal eyes. Irt i? tho higher grndes one-fourth of th f pupils are myopic, and In universities Li) this increases until from CO to 70 per ,f( cent of the students nro myopic. In J othor words, nearsightedness inr ,- creases steadily from tho lower t i to tho hlghor grndes, and In exact pro ' i portion to the length of tlmo devoted ' to tho eyestrain of school life. 1 |