Comparison of Proview phosphene tonometry with Goldmann applanation tonometry |
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Authors: | Morledge-Hampton Scott J Kwon Robert O Krishna Rohit Debry Peter W Willoughby Thomas L |
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Institution: | Eye Foundation of Kansas City, University of Missouri-Kansas City School of Medicine, MO 64108, USA. |
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Abstract: | BACKGROUND: To compare intraocular pressures obtained using a handheld pressure phosphene tonometer (PPT) (Proview, Bausch & Lomb Pharmaceuticals, Inc., Tampa, Fla.) with Goldmann applanation tonometry. METHODS: Comparative case series of 30 randomly selected patients. RESULTS: The readings obtained with the pressure phosphene tonometer display a higher mean and a larger standard deviation than those obtained with the Goldmann applanation tonometer (GAT). Differences between PPT and GAT readings tended to decrease as a function of increased Goldmann levels. The relation of Proview and Goldmann readings (r = 0.32) and the scatterplot were not consistent with the hypothesis that the 2 methods are equivalent. INTERPRETATION: Our results indicate that the pressure phosphene-type handheld tonometry method, which does not appear to provide an accurate and consistent measure of intraocular pressure, is substantially less reliable than the Goldmann method. |
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Keywords: | Proview phosphene intraocular pressure self tonometry |
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