Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm

Jin Rong Low,1– 3 Chee Wai Wong,1,3– 6 Jing Liang Loo,1,3,5– 8 Dan Milea,3,5,7,8 Shamira A Perera,1– 3,5 Yi Fang Lee,3,9 Si Rui Ng,1– 3 Mani Baskaran,2,3,5 Monisha Esther Nongpiur,2,3,5 Sharon Lee Choon Tow1,3,5– 8 1Department of Cataract a...

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Autores principales:	Low JR, Wong CW, Loo JL, Milea D, Perera SA, Lee YF, Ng SR, Baskaran M, Nongpiur ME, Tow SLC
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	glaucoma hemifacial spasm intraocular pressure water drinking test Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/55cc5d4b21bb4f6788e906a7d6cae8a3
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spelling	oai:doaj.org-article:55cc5d4b21bb4f6788e906a7d6cae8a32021-12-02T11:56:54ZEvaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm1177-5483https://doaj.org/article/55cc5d4b21bb4f6788e906a7d6cae8a32020-06-01T00:00:00Zhttps://www.dovepress.com/evaluation-of-intraocular-pressure-after-water-drinking-test-in-patien-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Jin Rong Low,1– 3 Chee Wai Wong,1,3– 6 Jing Liang Loo,1,3,5– 8 Dan Milea,3,5,7,8 Shamira A Perera,1– 3,5 Yi Fang Lee,3,9 Si Rui Ng,1– 3 Mani Baskaran,2,3,5 Monisha Esther Nongpiur,2,3,5 Sharon Lee Choon Tow1,3,5– 8 1Department of Cataract and Comprehensive Ophthalmology, Singapore National Eye Centre, Singapore; 2Department of Glaucoma, Singapore National Eye Centre, Singapore; 3Singapore Eye Research Institute, Singapore; 4Department of Surgical Retina, Singapore National Eye Centre, Singapore; 5Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore; 6Department of Ophthalmology, National University of Singapore, Singapore; 7Department of Neuro-Ophthalmology, Singapore National Eye Centre, Singapore; 8Neuroscience and Behavioral Disorders Program, Duke-NUS Medical School, Singapore; 9Department of Training and Education, Singapore National Eye Centre, SingaporeCorrespondence: Sharon Lee Choon Tow Tel +65 6322 7443Fax +65 6333 8339Email sharon.tow.l.c@singhealth.com.sgPurpose: The aim of the study is to examine the baseline intraocular pressure (IOP) and its changes after performing a water drinking test (WDT) in patients with unilateral hemifacial spasm (HFS).Patients and Methods: In this prospective observational study, patients aged 21 years and above diagnosed with unilateral HFS were recruited from the Singapore National Eye Centre between January 2015 and August 2016. The unaffected eye of each patient served as a matched control. An interviewer-administered standardized questionnaire on HFS symptoms and ophthalmic examination was performed. Automated perimetry, optical coherence tomography (OCT) of the optic nerve head, color disc stereophotography and water drinking test (WDT) were done. The primary outcome measure was the difference in IOP between eyes affected by HFS and fellow eyes at baseline and at 15, 30 and 45 minutes of the WDT.Results: Fifty-four patients with unilateral HFS were included. Mean age was 59.8± 9.9 years (range, 37.0– 84.0). Of these, 54% were female and 94% were Chinese. Mean baseline IOP was significantly higher in eyes with HFS (13.9± 3.1mmHg) compared to fellow eyes (13.3± 2.8mmHg) (p=0.008). There was no significant difference in absolute or percentage change in IOP from baseline between the 2 groups at 15, 30 and 45 minutes of the WDT. Mean vertical cup–disc ratio (VCDR) on clinical examination was significantly higher in eyes with HFS (0.5± 0.2) compared to fellow eyes (0.4± 0.2) (p=0.02). There was no significant difference between the groups for visual field parameters and mean retinal nerve fiber layer thickness on OCT.Conclusion: Hemifacial spasm is associated with a small but significant difference in mean baseline IOP and VCDR between affected and fellow eyes. However, when eyes affected by HFS and fellow eyes were challenged with the WDT, both responded in similar ways.Keywords: glaucoma, hemifacial spasm, intraocular pressure, water drinking testLow JRWong CWLoo JLMilea DPerera SALee YFNg SRBaskaran MNongpiur METow SLCDove Medical Pressarticleglaucomahemifacial spasmintraocular pressurewater drinking testOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 1675-1680 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	glaucoma hemifacial spasm intraocular pressure water drinking test Ophthalmology RE1-994
spellingShingle	glaucoma hemifacial spasm intraocular pressure water drinking test Ophthalmology RE1-994 Low JR Wong CW Loo JL Milea D Perera SA Lee YF Ng SR Baskaran M Nongpiur ME Tow SLC Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
description	Jin Rong Low,1– 3 Chee Wai Wong,1,3– 6 Jing Liang Loo,1,3,5– 8 Dan Milea,3,5,7,8 Shamira A Perera,1– 3,5 Yi Fang Lee,3,9 Si Rui Ng,1– 3 Mani Baskaran,2,3,5 Monisha Esther Nongpiur,2,3,5 Sharon Lee Choon Tow1,3,5– 8 1Department of Cataract and Comprehensive Ophthalmology, Singapore National Eye Centre, Singapore; 2Department of Glaucoma, Singapore National Eye Centre, Singapore; 3Singapore Eye Research Institute, Singapore; 4Department of Surgical Retina, Singapore National Eye Centre, Singapore; 5Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore; 6Department of Ophthalmology, National University of Singapore, Singapore; 7Department of Neuro-Ophthalmology, Singapore National Eye Centre, Singapore; 8Neuroscience and Behavioral Disorders Program, Duke-NUS Medical School, Singapore; 9Department of Training and Education, Singapore National Eye Centre, SingaporeCorrespondence: Sharon Lee Choon Tow Tel +65 6322 7443Fax +65 6333 8339Email sharon.tow.l.c@singhealth.com.sgPurpose: The aim of the study is to examine the baseline intraocular pressure (IOP) and its changes after performing a water drinking test (WDT) in patients with unilateral hemifacial spasm (HFS).Patients and Methods: In this prospective observational study, patients aged 21 years and above diagnosed with unilateral HFS were recruited from the Singapore National Eye Centre between January 2015 and August 2016. The unaffected eye of each patient served as a matched control. An interviewer-administered standardized questionnaire on HFS symptoms and ophthalmic examination was performed. Automated perimetry, optical coherence tomography (OCT) of the optic nerve head, color disc stereophotography and water drinking test (WDT) were done. The primary outcome measure was the difference in IOP between eyes affected by HFS and fellow eyes at baseline and at 15, 30 and 45 minutes of the WDT.Results: Fifty-four patients with unilateral HFS were included. Mean age was 59.8± 9.9 years (range, 37.0– 84.0). Of these, 54% were female and 94% were Chinese. Mean baseline IOP was significantly higher in eyes with HFS (13.9± 3.1mmHg) compared to fellow eyes (13.3± 2.8mmHg) (p=0.008). There was no significant difference in absolute or percentage change in IOP from baseline between the 2 groups at 15, 30 and 45 minutes of the WDT. Mean vertical cup–disc ratio (VCDR) on clinical examination was significantly higher in eyes with HFS (0.5± 0.2) compared to fellow eyes (0.4± 0.2) (p=0.02). There was no significant difference between the groups for visual field parameters and mean retinal nerve fiber layer thickness on OCT.Conclusion: Hemifacial spasm is associated with a small but significant difference in mean baseline IOP and VCDR between affected and fellow eyes. However, when eyes affected by HFS and fellow eyes were challenged with the WDT, both responded in similar ways.Keywords: glaucoma, hemifacial spasm, intraocular pressure, water drinking test
format	article
author	Low JR Wong CW Loo JL Milea D Perera SA Lee YF Ng SR Baskaran M Nongpiur ME Tow SLC
author_facet	Low JR Wong CW Loo JL Milea D Perera SA Lee YF Ng SR Baskaran M Nongpiur ME Tow SLC
author_sort	Low JR
title	Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
title_short	Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
title_full	Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
title_fullStr	Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
title_full_unstemmed	Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm
title_sort	evaluation of intraocular pressure after water drinking test in patients with unilateral hemifacial spasm
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/55cc5d4b21bb4f6788e906a7d6cae8a3
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Evaluation of Intraocular Pressure After Water Drinking Test in Patients with Unilateral Hemifacial Spasm

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