| Intraocular Pressure Measurement Using Rebound Tonometer for Deviated Angles and Positions in Human Eyes. | |
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MedLine Citation:
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PMID: 22029837 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Purpose: To investigate the influence of positional deviations on rebound tonometer measurement of intraocular pressure in humans. Materials and methods: Intraocular pressure was measured using the Icare rebound tonometer on the right eyes of 53 subjects in various conditions as follows: first, at a distance of 4, 6, or 8 mm from the center of the cornea with the probe perpendicular to the corneal plane; then, at 2 mm from the limbus in the nasal and temporal regions with the probe perpendicular to the corneal plane or along the visual axis; and lastly, with the angled probe touching the central cornea at angles of 10° or 20°. Results: Bland-Altman plots between the Goldmann applanation tonometer and rebound tonometer at various conditions revealed 95% limits of agreement ranging from ±4.5 to ±5.6 mm Hg. Intraocular pressures measured using the rebound tonometer were significantly lower than those measured using the Goldmann applanation tonometer when the rebound tonometer probe was placed 2 mm from the limbus in the temporal or nasal regions with the probe along the visual axis or when the probe was angled to touch the central cornea at an angle of 10° or 20°. In other positions, the intraocular pressures measured using the rebound tonometer were not significantly different. The rebound tonometer, noncontact tonometer, and Tonopen XL showed good agreement with the Goldmann applanation tonometer for intraocular pressure readings under optimal conditions. Conclusions: The intraocular pressures determined using the rebound tonometer were approximately equal to those obtained using the Goldmann applanation tonometer when the rebound tonometer measurements were made with the probe perpendicular to the corneal plane, irrespective of the location, that is, at the central cornea or 2 mm from the limbus. |
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Authors:
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Joji Takenaka; Hideki Mochizuki; Eriko Kunihara; Junko Tanaka; Yoshiaki Kiuchi |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-26 |
Journal Detail:
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Title: Current eye research Volume: - ISSN: 1460-2202 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8104312 Medline TA: Curr Eye Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Ophthalmology and Visual Science, Graduate School of Biomedical Sciences, Hiroshima University , Hiroshima , Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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