Please use this identifier to cite or link to this item: https://doi.org/10.2147/OPTH.S249943
Title: Evaluation of intraocular pressure after water drinking test in patients with unilateral hemifacial spasm
Authors: Low, J.R.
Wong, C.W. 
Loo, J.L. 
Milea, D. 
Perera, S.A. 
Lee, Y.F.
Ng, S.R.
Baskaran, M. 
Nongpiur, M.E. 
Tow, S.L.C. 
Keywords: Glaucoma
Hemifacial spasm
Intraocular pressure
Water drinking test
Issue Date: 2020
Publisher: Dove Medical Press Ltd
Citation: Low, J.R., Wong, C.W., Loo, J.L., Milea, D., Perera, S.A., Lee, Y.F., Ng, S.R., Baskaran, M., Nongpiur, M.E., Tow, S.L.C. (2020). Evaluation of intraocular pressure after water drinking test in patients with unilateral hemifacial spasm. Clinical Ophthalmology 14 : 1675-1680. ScholarBank@NUS Repository. https://doi.org/10.2147/OPTH.S249943
Rights: Attribution-NonCommercial 4.0 International
Abstract: Purpose: 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. © 2020 Low et al. This work is published and licensed by Dove Medical Press Limited.
Source Title: Clinical Ophthalmology
URI: https://scholarbank.nus.edu.sg/handle/10635/197810
ISSN: 11775467
DOI: 10.2147/OPTH.S249943
Rights: Attribution-NonCommercial 4.0 International
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_2147_OPTH_S249943.pdf287.59 kBAdobe PDF

OPEN

NoneView/Download

SCOPUSTM   
Citations

2
checked on Jun 22, 2022

Page view(s)

75
checked on Jun 23, 2022

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons