Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma

Justin A Schweitzer,1 Molly Ervin,2 John P Berdahl1 1Vance Thompson Vision, Sioux Falls, SD, USA; 2Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, USA Background: Corneal hysteresis (CH) is used to determine the level of risk of patients developing glaucoma, categorized as...

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Autores principales:	Schweitzer JA, Ervin M, Berdahl JP
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Corneal Hysteresis Glaucoma Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/7876e0c247b84c628a63885ca13ddabe
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spelling	oai:doaj.org-article:7876e0c247b84c628a63885ca13ddabe2021-12-02T04:02:23ZAssessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma1177-5483https://doaj.org/article/7876e0c247b84c628a63885ca13ddabe2018-09-01T00:00:00Zhttps://www.dovepress.com/assessment-of-corneal-hysteresis-measured-by-the-ocular-response-analy-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Justin A Schweitzer,1 Molly Ervin,2 John P Berdahl1 1Vance Thompson Vision, Sioux Falls, SD, USA; 2Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, USA Background: Corneal hysteresis (CH) is used to determine the level of risk of patients developing glaucoma, categorized as suspect, mild, moderate and severe.Methods: This is a retrospective review of 126 consecutive eyes presenting, for the first time, at a glaucoma subspecialty clinic. All eyes at initial examination underwent measurement of CH and intraocular pressure using the Goldmann applanation tonometry (IOPgat). Eyes were classified as CH<10 (n=51) or CH≥10 (n=75) and categorized into glaucoma suspect, mild, moderate, or severe glaucoma based on 24-2 Humphrey visual field testing. Additional data included number of topical glaucoma medications.Results: Of the eyes classified as a CH<10, 45.5% had moderate or severe glaucoma, and 11.8% of eyes with a CH≥10 had moderate or severe glaucoma. In the CH≥10 group, the mean IOPgat was 19.5 mmHg ± 4.72 mmHg (P<0.01) on 1 ± 1.26 (P<0.01) medications in the moderate/severe glaucoma group and 20.13 mmHg ± 4.95 mmHg (P<0.01) on 0.60 ± 0.95 (P<0.01) medications in the glaucoma suspect/mild glaucoma group. In the CH<10 group, mean IOPgat was 20.47 mmHg ± 7.56 mmHg (P<0.01) on 1.79 ± 1.17 (P<0.01) medications in the moderate/severe glaucoma group. Mean IOPgat was 17.54 mmHg ± 5.48 mmHg (P<0.01) on 0.63 ± 0.83 (P<0.01) medications in the glaucoma suspect/mild glaucoma group.Conclusion: Moderate to severe glaucoma is 2.9 (P<0.01) times more likely to occur in eyes that measure a CH<10 compared to eyes that measure a CH≥10. Although not statistically significant, suspect or mild glaucoma is more common in eyes that measure a CH≥10. Eyes in the CH<10 moderate/severe glaucoma group had statistically significant higher IOPgat (P<0.01) compared to the CH<10 suspect/mild glaucoma group. Measuring CH at initial presentation can help predict the severity of glaucoma. Keywords: intraocular pressure, visual fields, and corneal biomechanicsSchweitzer JAErvin MBerdahl JPDove Medical PressarticleCorneal Hysteresis GlaucomaOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 1809-1813 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Corneal Hysteresis Glaucoma Ophthalmology RE1-994
spellingShingle	Corneal Hysteresis Glaucoma Ophthalmology RE1-994 Schweitzer JA Ervin M Berdahl JP Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
description	Justin A Schweitzer,1 Molly Ervin,2 John P Berdahl1 1Vance Thompson Vision, Sioux Falls, SD, USA; 2Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, USA Background: Corneal hysteresis (CH) is used to determine the level of risk of patients developing glaucoma, categorized as suspect, mild, moderate and severe.Methods: This is a retrospective review of 126 consecutive eyes presenting, for the first time, at a glaucoma subspecialty clinic. All eyes at initial examination underwent measurement of CH and intraocular pressure using the Goldmann applanation tonometry (IOPgat). Eyes were classified as CH<10 (n=51) or CH≥10 (n=75) and categorized into glaucoma suspect, mild, moderate, or severe glaucoma based on 24-2 Humphrey visual field testing. Additional data included number of topical glaucoma medications.Results: Of the eyes classified as a CH<10, 45.5% had moderate or severe glaucoma, and 11.8% of eyes with a CH≥10 had moderate or severe glaucoma. In the CH≥10 group, the mean IOPgat was 19.5 mmHg ± 4.72 mmHg (P<0.01) on 1 ± 1.26 (P<0.01) medications in the moderate/severe glaucoma group and 20.13 mmHg ± 4.95 mmHg (P<0.01) on 0.60 ± 0.95 (P<0.01) medications in the glaucoma suspect/mild glaucoma group. In the CH<10 group, mean IOPgat was 20.47 mmHg ± 7.56 mmHg (P<0.01) on 1.79 ± 1.17 (P<0.01) medications in the moderate/severe glaucoma group. Mean IOPgat was 17.54 mmHg ± 5.48 mmHg (P<0.01) on 0.63 ± 0.83 (P<0.01) medications in the glaucoma suspect/mild glaucoma group.Conclusion: Moderate to severe glaucoma is 2.9 (P<0.01) times more likely to occur in eyes that measure a CH<10 compared to eyes that measure a CH≥10. Although not statistically significant, suspect or mild glaucoma is more common in eyes that measure a CH≥10. Eyes in the CH<10 moderate/severe glaucoma group had statistically significant higher IOPgat (P<0.01) compared to the CH<10 suspect/mild glaucoma group. Measuring CH at initial presentation can help predict the severity of glaucoma. Keywords: intraocular pressure, visual fields, and corneal biomechanics
format	article
author	Schweitzer JA Ervin M Berdahl JP
author_facet	Schweitzer JA Ervin M Berdahl JP
author_sort	Schweitzer JA
title	Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
title_short	Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
title_full	Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
title_fullStr	Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
title_full_unstemmed	Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
title_sort	assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/7876e0c247b84c628a63885ca13ddabe
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Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma

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