Comparison of the IOPen® and iCare® rebound tonometers with the Goldmann tonometer in a normal population
This study proposes to evaluate the level of accuracy of intraocular pressure (IOP) measurements of a second generation rebound tonometer (IOPen®), taking as references the Goldmann Applanation Tonometer (GAT) and the iCare® rebound tonometer. The right eyes of 101 consecutive clinical patients were...
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Published in | Ophthalmic & physiological optics Vol. 30; no. 1; pp. 108 - 112 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.01.2010
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Subjects | |
Online Access | Get full text |
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Summary: | This study proposes to evaluate the level of accuracy of intraocular pressure (IOP) measurements of a second generation rebound tonometer (IOPen®), taking as references the Goldmann Applanation Tonometer (GAT) and the iCare® rebound tonometer. The right eyes of 101 consecutive clinical patients were assessed with the three tonometers. The IOPen® and iCare® measurements were taken by two different optometrists and the GAT by an ophthalmologist. In this study, statistically significant differences were found when comparing the IOPen® tonometer with the other two tonometers (p < 0.001). The IOPen® underestimated the IOP value when compared to the GAT and the iCare® (mean differences were 2.94 ± 4.65 mmHg and 3.20 ± 4.72 mmHg (mean ± S.D.), respectively). The frequency distribution of differences demonstrated that in more than 55% of measurements the IOP readings differed by more than 3 mmHg between the IOPen® and the GAT. Based on the present population study, these results suggest that IOPen® measurements should be interpreted with caution. |
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Bibliography: | ArticleID:OPO697 ark:/67375/WNG-8CKDCM3Z-7 istex:6BD44D510C282099D4D9C7FF177EADE38C926FED ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0275-5408 1475-1313 |
DOI: | 10.1111/j.1475-1313.2009.00697.x |