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1 Department of Ophthalmology, Washington University School of Medicine 660 South Euclid, Saint Louis, Mo. 63110
Previous theoretical treatment of the Schiøtz tonometer assumed the posterior corneal surface to be the surface of reference. Experimental results indicate that in indentation tonometry the strain-bearing surface of the cornea, and hence the surface of reference, lies anteriorly.
Key Words: tonography indentation tonometry Schiøtz tonometer calibration corneal surface
Submitted on March 10, 1971
Accepted on June 10, 1971
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