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November 6, 1926

Sémiologie oculaire, le cristallin, Anatomie. Physiologie. Pathologie.

JAMA. 1926;87(19):1580. doi:10.1001/jama.1926.02680190056035

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This, the third book of this series, deals exclusively with the crystalline lens and its suspensory apparatus. The subject matter is divided into three parts, the first of which has to do with the gross and microscopic anatomy. Included is a well written and comprehensively illustrated portion on the development of the human lens with sufficient comparative embryology to be instructive. Four short pages are devoted to the examination of the lens with the Gullstrand slit lamp and binocular microscope. The second part of the book deals with the physiology of the lens, and naturally much space is devoted to a consideration of the optics of the lens. This is well written, and the ultramathematical phases have been eliminated. Of course, the author leans toward the Tscherning theory of accommodation; however, this natural inclination does not make him gloss over the other theories too sketchily. The discussion of accommodation leads

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