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August 1958

Causes of Acquired Myopia.

AMA Arch Ophthalmol. 1958;60(2):353-354. doi:10.1001/archopht.1958.00940080369031

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This monograph represents the author's original researches in myopia which were started in 1939 at the suggestion of Prof. S. Ishihara, known in this country for his isochromatic plates to test color-blindness. Myopia constitutes a serious problem in Japan, and seems to be on the increase. The author believes that the evidence points to postnatal factors rather than to congenital factors or natural selection, since the greater part of the increase occurred in a relatively short period of time. Accordingly, the present research was undertaken to find measures to control acquired myopia. The author read a summary of his experiments in English at the XVIIth International Congress of Ophthalmology in New York in 1954. This monograph is in effect an enlarged account of what was reported at that time. The author considers that myopia occurs as the result of two factors: (1) congenital, and (2) acquired. While the axial length

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