How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye.
Dry eye is a condition that has significant morbidity. While there exists a myriad of diagnostic tests to monitor dry eye, most of them do not correlate with each other or have poor repeatability. Anterior Segment Optical Coherence Tomography (AS-OCT), an instrument that can measure tear meniscus he...
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sg-ntu-dr.10356-447412023-02-28T18:03:46Z How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. Lee, Man Xin. School of Biological Sciences Singapore Eye Research Instituten Singapore National Eye Centre Duke-NUS Medical School Louis Tong DRNTU::Science::Medicine::Optical instruments Dry eye is a condition that has significant morbidity. While there exists a myriad of diagnostic tests to monitor dry eye, most of them do not correlate with each other or have poor repeatability. Anterior Segment Optical Coherence Tomography (AS-OCT), an instrument that can measure tear meniscus height (TMH) and area (TMA), had been shown to be repeatable, sensitive, specific and non-invasive in the diagnosis of dry eye. Here we evaluate AS-OCT applicability in dry eye drug trials. AS-OCT tear meniscus measurements were correlated with other diagnostic test at baseline. While TMH and TMA correlated with each other, only Schirmer I test, among other tests, was found to correlate with TMH and TMA except inferior TMA. Intra-observer repeatability for measuring each scan was found to be consistent for both TMH and TMA measurements. No statistically significant differences were found in the TMH and TMA pre- and post-treatment or between treatment groups (p>0.05). Altogether, the results suggest that AS-OCT can be included in longitudinal dry eye studies to validate Schirmer I test. We also compared the repeatability between scans of the newer Cirrus AS-OCT with the older Visante AS-OCT and preliminary results suggest Cirrus has better repeatability. Bachelor of Science in Biological Sciences 2011-06-03T06:30:21Z 2011-06-03T06:30:21Z 2011 2011 Final Year Project (FYP) http://hdl.handle.net/10356/44741 en Nanyang Technological University 42 p. application/pdf |
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DRNTU::Science::Medicine::Optical instruments Lee, Man Xin. How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
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Dry eye is a condition that has significant morbidity. While there exists a myriad of diagnostic tests to monitor dry eye, most of them do not correlate with each other or have poor repeatability. Anterior Segment Optical Coherence Tomography (AS-OCT), an instrument that can measure tear meniscus height (TMH) and area (TMA), had been shown to be repeatable, sensitive, specific and non-invasive in the diagnosis of dry eye. Here we evaluate AS-OCT applicability in dry eye drug trials. AS-OCT tear meniscus measurements were correlated with other diagnostic test at baseline. While TMH and TMA correlated with each other, only Schirmer I test, among other tests, was found to correlate with TMH and TMA except inferior TMA. Intra-observer repeatability for measuring each scan was found to be consistent for both TMH and TMA measurements. No statistically significant differences were found in the TMH and TMA pre- and post-treatment or between treatment groups (p>0.05). Altogether, the results suggest that AS-OCT can be included in longitudinal dry eye studies to validate Schirmer I test. We also compared the repeatability between scans of the newer Cirrus AS-OCT with the older Visante AS-OCT and preliminary results suggest Cirrus has better repeatability. |
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School of Biological Sciences |
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School of Biological Sciences Lee, Man Xin. |
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Final Year Project |
author |
Lee, Man Xin. |
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Lee, Man Xin. |
title |
How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
title_short |
How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
title_full |
How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
title_fullStr |
How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
title_full_unstemmed |
How dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
title_sort |
how dry can it get? the use of anterior segment optical coherence tomography in the research and management of dry eye. |
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2011 |
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http://hdl.handle.net/10356/44741 |
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1759857183404589056 |