Causes and Prevention of Near-Sightedness e-bog

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. These considerations induce me to speak of the causes and the prevention of myopia, though I must content myself with a gene ral sketch, as want of time does not permit me to treat exhaustively of the subject. Before proceeding to the consideration of these questions, let me, for the sake of clearness, premise a concise explanation of the compass of vision in normal and in near-sighted eyes.