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Article
October 1967

CLINICAL EVALUATION OF THE AO APPLANATION TONOMETER-Reply

Arch Ophthalmol. 1967;78(4):564. doi:10.1001/archopht.1967.00980030566028

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Abstract

To the Editor.  —Doctor Ballin is correct in his two observations. The contact prisms of the Haag-Strait and AO applanation tonometers are interchangeable. It is also true, as stated in our report, that the vertical adjustment of the AO tonometer prism on the patient's cornea is "very difficult." In our experience some physicians readily master the technique of proper vertical adjustment of the AO applanation tonometer, whereas others, significantly fewer in number, experience difficulty.

REPLACEMENT COPIES AVAILABLE  An unknown (we hope small) number of copies of the August 1967 issue of the Archives did not contain the color plate facing page 156, illustrating "Further Advances of the Study of the Macula" by A. E. Maumenee, MD. While the supply lasts the Circulation and Records Department will replace defective copies on request. Contact Robert A. Enlow, manager, at 535 N Dearborn St, Chicago 60610.

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