Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities
Recent advances in tonometry have led to the development of a number of devices with differing clinical applications. Their role in cases of abnormal corneal thickness and surface irregularities is particularly important, as inaccurate estimation of the true intraocular pressure (IOP) in such cases...
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| Format: | Article |
| Language: | English |
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Elsevier
2008-01-01
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| Series: | Journal of Optometry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1888429608700621 |
| _version_ | 1818511036601335808 |
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| author | Carlos Gustavo V. De Moraes Tiago S. Prata Jeffrey Liebmann Robert Ritch |
| author_facet | Carlos Gustavo V. De Moraes Tiago S. Prata Jeffrey Liebmann Robert Ritch |
| author_sort | Carlos Gustavo V. De Moraes |
| collection | DOAJ |
| description | Recent advances in tonometry have led to the development of a number of devices with differing clinical applications. Their role in cases of abnormal corneal thickness and surface irregularities is particularly important, as inaccurate estimation of the true intraocular pressure (IOP) in such cases may lead to suboptimal evaluation.
The purpose of the present review was to evaluate the accuracy of the most widely used devices in cases of corneal thickness and surface irregularities, based on a survey of the published literature.
The analysis was based on a Medline search focusing mainly on papers that have evaluated the devices’ accuracy with respect to corneal thickness and irregularities.
Nine device types (Goldmann tonometer, Tono-Pen, Perkins tonometer, Ocular Response Analyzer, non-contact tonometer, pneumatonometer, I-Care rebound tonometer, Pascal dynamic contour tonometer (DCT) and Phosphene tonometer) were described in detail. Moreover, the physical principles and major utility of each tonometer were compared.
Each of the many different commercially available tonometers has specific advantages and disadvantages. New non-invasive technologies are getting closer to a precise estimation of the true IOP. However, among all tonometers, none is highly accurate when both corneal thickness and surface irregularities are present. Fifty years after its development, Goldmann tonometry remains the gold standard to which all other devices are compared. |
| first_indexed | 2024-12-10T23:28:04Z |
| format | Article |
| id | doaj.art-68ed0feeccc04368a944770c4a9a444c |
| institution | Directory Open Access Journal |
| issn | 1888-4296 |
| language | English |
| last_indexed | 2024-12-10T23:28:04Z |
| publishDate | 2008-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Optometry |
| spelling | doaj.art-68ed0feeccc04368a944770c4a9a444c2022-12-22T01:29:30ZengElsevierJournal of Optometry1888-42962008-01-0112434910.3921/joptom.2008.43Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and IrregularitiesCarlos Gustavo V. De Moraes0Tiago S. Prata1Jeffrey Liebmann2Robert Ritch3Einhorn Clinical Research Center, New York Eye and Ear, Infirmary, New York, NY, USAEinhorn Clinical Research Center, New York Eye and Ear, Infirmary, New York, NY, USAManhattan Eye, Ear and Throat, Hospital, New York; NY, USAEinhorn Clinical Research Center, New York Eye and Ear, Infirmary, New York, NY, USARecent advances in tonometry have led to the development of a number of devices with differing clinical applications. Their role in cases of abnormal corneal thickness and surface irregularities is particularly important, as inaccurate estimation of the true intraocular pressure (IOP) in such cases may lead to suboptimal evaluation. The purpose of the present review was to evaluate the accuracy of the most widely used devices in cases of corneal thickness and surface irregularities, based on a survey of the published literature. The analysis was based on a Medline search focusing mainly on papers that have evaluated the devices’ accuracy with respect to corneal thickness and irregularities. Nine device types (Goldmann tonometer, Tono-Pen, Perkins tonometer, Ocular Response Analyzer, non-contact tonometer, pneumatonometer, I-Care rebound tonometer, Pascal dynamic contour tonometer (DCT) and Phosphene tonometer) were described in detail. Moreover, the physical principles and major utility of each tonometer were compared. Each of the many different commercially available tonometers has specific advantages and disadvantages. New non-invasive technologies are getting closer to a precise estimation of the true IOP. However, among all tonometers, none is highly accurate when both corneal thickness and surface irregularities are present. Fifty years after its development, Goldmann tonometry remains the gold standard to which all other devices are compared.http://www.sciencedirect.com/science/article/pii/S1888429608700621tonometry accuracyintraocular pressurecorneal thicknesscorneal irregularities |
| spellingShingle | Carlos Gustavo V. De Moraes Tiago S. Prata Jeffrey Liebmann Robert Ritch Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities Journal of Optometry tonometry accuracy intraocular pressure corneal thickness corneal irregularities |
| title | Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities |
| title_full | Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities |
| title_fullStr | Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities |
| title_full_unstemmed | Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities |
| title_short | Modalities of Tonometry and their Accuracy with Respect to Corneal Thickness and Irregularities |
| title_sort | modalities of tonometry and their accuracy with respect to corneal thickness and irregularities |
| topic | tonometry accuracy intraocular pressure corneal thickness corneal irregularities |
| url | http://www.sciencedirect.com/science/article/pii/S1888429608700621 |
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