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Article
October 1972

A New Instrument for Keratography

Author Affiliations

Boston
From the Howe Laboratory of Ophthalmology, Harvard Medical School, and Massachusetts Eye and Ear Infirmary, Boston.

Arch Ophthalmol. 1972;88(4):425-428. doi:10.1001/archopht.1972.01000030427016
Abstract

Aberrations of the anterior corneal surface can be recorded by an instrument based on the Placido principle, which has a number of advantages over the other instruments previously designed for this purpose. It is also possible to make measurements on the original film to determine by means of a graph the exact radius of curvature in any desired area. The construction of the apparatus is not complicated, its operation is simple, and the results highly reproducible.

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