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(Investigative Ophthalmology and Visual Science. 1971;10:710-715.)
© 1971 by The Association for Research in Vision and Ophthalmology, Inc.

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Theory and Calibration of the SchiØtz Tonometer

VI. Experimental Results of Tonometric Measurements Scale Reading Versus Tonometric Pressure

ROBERT A. MOSES 1 and WALTER J. GRODZKI 2

1 Department of Ophthalmology, Washington University School of Medicine, 660 South Euclid, Saint Louis, Mo. 63110
2 Department of Ophthalmology, Washington University School of Medicine, 660 South Euclid, Saint Louis, Mo. 63110.

Tonometer scale reading at constant pressure was measured in twenty enucleated human eyes. Scale reading was inversely related to corneal radius of curvature as predicted by a mathematical model. Formulas relating scale reading, tonometric pressure, plunger weight, and corneal radius of curvature are derived from the data. The current Pt versus R tables (1955) very nearly correspond to the present data for the 8.0 mm. radius of curvature cornea.

Key Words: scale reading • corneal radius of curvature • tonometric pressure • plunger weight

Submitted on April 27, 1971
Accepted on July 15, 1971






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Copyright © 1971 by the Association for Research in Vision and Ophthalmology