Effects of Wink Glass on Blink Rate, Nibut and Ocular Surface Symptoms during Visual Display Unit Use

被引:19
作者
Ang, Cheah Kiok [1 ]
Mohidin, Norhani [1 ]
Chung, Kah Meng [2 ]
机构
[1] Univ Kebangsaan Malaysia, Sch Healthcare Sci, Fac Hlth Sci, Optometry & Vis Sci Program, Kuala Lumpur 50300, Malaysia
[2] Rampai Town Ctr, Kuala Lumpur, Malaysia
关键词
Blink rate; non-invasive tear break-up time; visual display units; Wink glass; TEAR BREAK-UP; FILM STABILITY; TERMINAL USE;
D O I
10.3109/02713683.2013.859273
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Purpose/Aim: Wink glass (WG), an invention to stimulate blinking at interval of 5 s was designed to reduce dry eye symptoms during visual display unit (VDU) use. The objective of this study is to investigate the effect of WG on visual functions that include blink rate, ocular surface symptoms (OSS) and tear stability during VDU use. Materials and methods: A total of 26 young and asymptomatic subjects were instructed to read articles in Malay language with a computer for 20 min with WG whereby their blink rate, pre- and post-task tear break-up time, and OSS were recorded. The results were compared to another reading session of the subjects wearing a transparent plastic sheet as a control. Results: Non-invasive tear break-up time was reduced after reading session with transparent plastic sheet (pre-task = 5.97 s, post-task = 5.14 s, z = -2.426, p = 0.015, Wilcoxon), but remained stable (pre-task = 5.62 s, post-task = 5.35 s, z = -0.67, p = 0.501) during the reading session with WG. The blink rate recorded during reading session with plastic sheet was 9 blinks/min (median) and this increased to 15 blinks/min (z = -3.315, p = 0.001) with WG. The reading task caused OSS (maximum scores = 20) with median score of 1 (0-8) reduced to median score of 0 (0-3) after wearing WG (z = -2.417, p = 0.016). Conclusion: WG was found to increase post-task tear stability, increased blinking rate and reduced OSS during video display unit use among young and healthy adults. Although it may be considered as an option to improve dry eye symptoms among VDU users, further studies are warranted to establish its stability and its effect on subjects with dry eyes.
引用
收藏
页码:879 / 884
页数:6
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