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February 25, 1939, Vol 112, No. 8 >

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Other Articles | February 25, 1939

Refraction of the Eye

JAMA. 1939;112(8):769-770. doi:10.1001/jama.1939.02800080089038.
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ABSTRACT

The first thirteen chapters, 167 pages, are devoted to physiologic optics, given in somewhat less detail than the author's book on Ophthalmic Optics published by the F. A. Davis Company in 1927. Chapter 14 is on the lens changes in accommodation, method of determining the accommodative power of the eye, presbyopia and its symptoms and cycloplegics and their uses. He states on pages 181-182 that atropine used in the conjunctival sac reaches its maximum cycloplegic effect in two hours. If this were true why should it be used for "a day or two before refractions"? He also states on page 183 that homatropine hydrobromide is "an efficient and adequate cycloplegic." Two sentences later he says "It is unsatisfactory in children...." He further states on page 184 of cycloplegics that "they are unnecessary in older presbyopes." With this dogmatic statement we must take issue. On page 185 he states of ametropia

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