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. 1978 May;85(5 Pt 1):715.
doi: 10.1016/s0002-9394(14)77111-9.

Ball-bearing keratometry

R J Schechter

Ball-bearing keratometry

R J Schechter. Am J Ophthalmol. 1978 May.

Abstract

We obtained steel test balls for keratometer calibration at nominal cost by using a selected set of steel ball bearings, readily available for nonoptical purposes. The set of keratometer tests balls each have an accuracy of greater than one part in 1,000.

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