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

The Original Bates Method, for correcting vision defects

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T HE testimony of the experiments described in the preceding chapters to the effect that the lens is not a factor in accommodation is confirmed by numerous observations on the eyes of adults and children, with normal vision, errors of refraction, or amblyopia, and on the eyes of adults after the removal of the lens for cataract.
It has already been pointed out that the instillation of atropine into the eye is supposed to prevent accommoda tion by paralyzing the muscle credited with controlling the shape of the lens. 1 hat it has this effect is stated in every text-book on the subject,1 and the drug is daily used in the fitting of glasses for the purpose of eliminat ing the supposed influence of the lens upon refractive states.
In about nine cases out of ten the conditions resulting from the instillation of atropine into the eye fit the theory upon which its use is based; but in the tenth case they do not, and every ophthalmologist of any experience has noted some of these tenth cases. Many of them are re ported in the literature, and many of them have come under my own observation. According to the theory,
1 Certain substances have the power of producing a dilation of the pupil (mydriasis), and hence are termed mydriatics. At the same time they act upon the ciliary body, diminishing and, when applied in sufficient strength, completely paralyzing the power of accommodation, thus rendering the eye for some time unalterably focussed for the farthest point.-Herman Snellen, Jr.: Mydriatics and Myotics, System of Diseases of the Eye, edited by Norris and Oliver, 1897-1900, vpl. ii, p. 30.