Comparison of intraocular pressure measurements with the Oculab Tono-Pen vs manometry in humans shortly after death

We compared the Oculab Tono-Pen, a miniaturized Mackay-Marg tonometer, with a Statham membrane manometer in six humans (12 eyes), three to six hours after death. The intraocular pressure was changed in 5- to 10-mm Hg steps in a range between 0 and 60 mm Hg by an infusion system. The correlation coef...

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Bibliographic Details
Published inAmerican journal of ophthalmology Vol. 105; no. 6; p. 678
Main Authors Hessemer, V, Rössler, R, Jacobi, K W
Format Journal Article
LanguageEnglish
Published United States 15.06.1988
Subjects
Aged
Evaluation Studies as Topic
Humans
Intraocular Pressure
Manometry - standards
Middle Aged
Regression Analysis
Tonometry, Ocular - instrumentation
Tonometry, Ocular - standards
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Summary:We compared the Oculab Tono-Pen, a miniaturized Mackay-Marg tonometer, with a Statham membrane manometer in six humans (12 eyes), three to six hours after death. The intraocular pressure was changed in 5- to 10-mm Hg steps in a range between 0 and 60 mm Hg by an infusion system. The correlation coefficient of the relation of Tono-Pen readings vs manometrically determined intraocular pressures was .99. Compared to the manometer, the Tono-Pen gave a small underestimation of intraocular pressure above 17 mm Hg or overestimation below 17 mm Hg. The maximal deviation of the Tono-Pen readings from the manometer readings was 2.5 mm Hg. In our experience the correspondence between Tono-Pen and manometer readings was superior to the correspondence between the readings obtained with the original Mackay-Marg tonometer and manometry.
ISSN:0002-9394
DOI:10.1016/0002-9394(88)90064-5