| Evaluation of the Icare-ONE rebound tonometer as a self-measuring intraocular pressure device in normal subjects. | |
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MedLine Citation:
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PMID: 22297535 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: To compare Icare ONE rebound self-tonometer (ICRBT) measurements with Goldman applanation tonometry (GAT). METHODS: A trained examiner instructed each of 60 normal subjects on use of the ICRBT. Each subject then took two measurements of his/her own pressure using the ICRBT. Finally, a different examiner, who was masked to the earlier readings, measured IOP by GAT. Bland-Altman limits of agreement (LOA), intraclass correlation coefficients (ICCs), Kappa values, and paired t-test were used to assess the agreement between the two methods. Pearson's correlation coefficient was used for correlation analysis. RESULTS: All of the subjects were able to obtain correct measurements with ICRBT after three attempts. The mean intraocular pressure with ICRBT and GAT measurements were 16.0 ± 3.3 mmHg and 13.7 ± 2.5 mmHg respectively. The mean difference between patient's ICRBT and technician's GAT measurements was 2.3 mmHg (p < 0.001). In 63 % (38/60) of the cases the IOP difference (ICRBT - GAT) was within ± 3 mmHg. The weighted Kappa for the IOP measurements of the two methods was 0.49 (95% CI: 0.30-0.68, p < 0.001), indicating acceptable agreement. A significantly positive correlation was found between ICRBT IOP measurements and central corneal thickness (CCT) (r = 0.48, p < 0.001). In addition, the difference in IOP measurements (ICRBT - GAT) between the two methods was positively correlated with CCT (r = 0.31, p = 0.015), indicating that greater thickness is associated with greater differences between the two methods. CONCLUSION: The ICRBT was reliable in the hands of normal subjects, and may be used for self-monitoring of IOP. ICRBT measurements generally overestimated GAT measurements. |
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Authors:
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Ioannis Halkiadakis; Aimilianos Stratos; George Stergiopoulos; Eleni Patsea; Sotiris Skouriotis; Panagiotis Mitropoulos; Dimitrios Papaconstantinou; Gerasimos Georgopoulos |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-3 |
Journal Detail:
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Title: Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie Volume: - ISSN: 1435-702X ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8205248 Medline TA: Graefes Arch Clin Exp Ophthalmol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Ophthalmiatrion Athinon, Athens Eye Hospital, Konstadinoupoleos 17 Marousi, 15124, Athens, Greece, ihalkia@gmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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