The Cure of Imperfect Sight by Treatment
Without Glasses - online book

The Original Bates Method, for correcting vision defects

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N O phase of ophthalmology, not even the problem of accommodation, has been the subject of so much investigation and discussion as the cause and prevention of myopia. Since hypermetropia was supposed to be due to a congenital deformation of the eyeball, and astigmatism, until recently, was also sup posed to be congenital in most cases, these conditions were not thought to call for any explanation, nor to admit of any prevention; but myopia appeared to be acquired. It therefore presented a problem of immense practical importance to which many eminent men de voted years of labor.
Voluminous statistics were collected regarding its oc currence, and are still being collected. The subject has produced libraries of literature. But very little light is to be gained from the perusal of this material, and for the most part it leaves the reader with an impression of hopeless confusion. It is impossible even to arrive at any conclusion as to the prevalence of the complaint; for not only has there been no uniformity of standards and methods, but none of the investigators has taken into account the fact that the refraction of the eye is not a constant condition, but one which continually varies. There is no doubt, however, that most children, when they begin school, are free from this defect, and that both the number of cases and the degree of the myopia steadily increase as the educational pro cess progresses. Professor Hermann Cohn, of Breslau,