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1997•Journal of GlaucomaRequires access

A Comparison of Intraocular Pressure Measurements with the XPERT Noncontact Tonometer and Goldmann Applanation Tonometry

Karen S. Popovich, M. Bruce Shields

Open publisher page 27 citations

Abstract

PURPOSE: The purpose of this study was to compare intraocular pressure measurements obtained with XPERT, an upgraded model of the noncontact tonometer, with those from Goldmann applanation tonometry. METHODS: An average of three intraocular pressure measurements, generated by the XPERT, was compared with a single reading from a Goldmann applanation tonometer in 421 eyes of 220 patients. RESULTS: The standard deviation of the matched-pair differences (Sdiff) for the entire population was 2.3 mm Hg, whereas in a subset of 95 eyes with intraocular pressures of > or = 20 mm Hg by Goldmann applanation tonometry, the Sdiff was 3.3 mm Hg. CONCLUSIONS: The XPERT was found to provide reliable intraocular pressure measurements, especially within the normal range.

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What this paper is about

PURPOSE: The purpose of this study was to compare intraocular pressure measurements obtained with XPERT, an upgraded model of the noncontact tonometer, with those from Goldmann applanation tonometry. METHODS: An average of three intraocular pressure measurements, generated by the XPERT, was compared with a single reading from a Goldmann applanation tonometer in 421 eyes of 220 patients. RESULTS: The standard deviation of the matched-pair differences (Sdiff) for the entire population was 2.3 mm Hg, whereas in a subset of 95 eyes with intraocular pressures of > or = 20 mm Hg by Goldmann applanation tonometry, the Sdiff was 3.3 mm Hg. CONCLUSIONS: The XPERT was found to provide reliable intraocular pressure measurements, especially within the normal range.

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Available abstract

PURPOSE: The purpose of this study was to compare intraocular pressure measurements obtained with XPERT, an upgraded model of the noncontact tonometer, with those from Goldmann applanation tonometry. METHODS: An average of three intraocular pressure measurements, generated by the XPERT, was compared with a single reading from a Goldmann applanation tonometer in 421 eyes of 220 patients. RESULTS: The standard deviation of the matched-pair differences (Sdiff) for the entire population was 2.3 mm Hg, whereas in a subset of 95 eyes with intraocular pressures of > or = 20 mm Hg by Goldmann applanation tonometry, the Sdiff was 3.3 mm Hg. CONCLUSIONS: The XPERT was found to provide reliable intraocular pressure measurements, especially within the normal range.

Key concepts: Intraocular pressure, Medicine, Goldmann Applanation Tonometer, Applanation tonometry, Ophthalmology, Glaucoma, Optometry, Blood pressure

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A Comparison of Intraocular Pressure Measurements with the XPERT Noncontact Tonometer and Goldmann Applanation Tonometry — Research Paper | ScholarLens