Comparison of the ICare® rebound tonometer with the Goldmann tonometer in a normal population
The aim of this study was to evaluate the accuracy of measurement of intraocular pressure (IOP) using a new induction/impact rebound tonometer (ICare®) in comparison with the Goldmann applanation tonometer (AT). The left eyes of 46 university students were assessed with the two tonometers, with indu...
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Published in | Ophthalmic & physiological optics Vol. 25; no. 5; pp. 436 - 440 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Science Ltd
01.09.2005
Blackwell |
Subjects | |
Online Access | Get full text |
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Summary: | The aim of this study was to evaluate the accuracy of measurement of intraocular pressure (IOP) using a new induction/impact rebound tonometer (ICare®) in comparison with the Goldmann applanation tonometer (AT).
The left eyes of 46 university students were assessed with the two tonometers, with induction tonometry being performed first. The ICare® was handled by an optometrist and the Goldmann tonometer by an ophthalmologist.
In this study, statistically significant differences were found when comparing the ICare® rebound tonometer with applanation tonometry (AT) (p < 0.05). The mean difference between the two tonometers was 1.34 ± 2.03 mmHg (mean ± S.D.) and the 95% limits of agreement were ±3.98 mmHg. A frequency distribution of the differences demonstrated that in more than 80% of cases the IOP readings differed by <3 mmHg between the ICare® and the AT.
In the present population the ICare® overestimates the IOP value by 1.34 mmHg on average when compared with Goldmann tonometer. Nevertheless, the ICare® tonometer may be helpful as a screening tool when Goldmann applanation tonometry is not applicable or not recommended, as it is able to estimate IOP within a range of ±3.00 mmHg in more than 80% of the population. |
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Bibliography: | istex:C35D33A263D369574FD9DFB92E78F1E32B2BEA35 ArticleID:OPO327 ark:/67375/WNG-TV1SBNMV-P ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0275-5408 1475-1313 |
DOI: | 10.1111/j.1475-1313.2005.00327.x |