Eye Center, Affiliated Second Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
Clin Transl Sci. 2021 May;14(3):829-836. doi: 10.1111/cts.12933. Epub 2021 May 3.
The purpose of this study was to investigate the influence of smartphone reading on the ocular surface and to compare the various effects of different screens and light conditions on the ocular surface. One hundred nineteen volunteers were randomly divided into: light + organic light-emitting diode (OLED), light + electronic ink (eINK), dark + OLED, and dark + eINK. Ocular surface examinations, including noninvasive break-up time (NIBUT), noninvasive keratograph tear meniscus height (NIKTMH), ocular redness, fluorescein break-up time (FBUT), corneal fluorescein staining, meibomian gland assessment, Schirmer I Test, and blinking frequency, were performed before and after a reading task. Symptoms were evaluated using the Ocular Surface Disease Index (OSDI) and Computer Vision Syndrome Questionnaire (CVS-Q). NIBUT and FBUT were decreased statistically significantly after participants read on an OLED screen for 2 hours compared with the baseline in light and dark environments, whereas no statistically significant decrease was observed on an eINK screen. NIKTMH was statistically significantly decreased after reading on an OLED screen in light and dark settings, and the eINK screen had a lesser effect on NIKTMH. An obvious increase in the ocular redness, OSDI and CVS-Q scores was observed after reading on an OLED screen, whereas the eINK screen had a lesser effect on these indicators. Blink rate increased gradually in OLED subgroups during the reading task, whereas no statistically significant difference was observed in the eINK subgroups. Our research suggested that reading on an OLED screen can cause ocular surface disorder and obvious subjective discomfort, whereas reading on an eINK screen can minimize ocular surface disorder in both dark and light environments.
本研究旨在探讨智能手机阅读对眼表的影响，并比较不同屏幕和光照条件对眼表的各种影响。将 119 名志愿者随机分为四组：亮光+有机发光二极管（OLED）组、亮光+电子墨水（eINK）组、暗光+OLED 组和暗光+eINK 组。分别在阅读任务前后进行眼表检查，包括非侵入性泪膜破裂时间（NIBUT）、非侵入性角膜地形图泪膜高度（NIKTMH）、眼表发红、荧光素破裂时间（FBUT）、角膜荧光素染色、睑板腺评估、Schirmer I 试验和眨眼频率。使用眼表疾病指数（OSDI）和计算机视觉综合征问卷（CVS-Q）评估症状。与亮、暗环境下的基线相比，参与者在 OLED 屏幕上阅读 2 小时后 NIBUT 和 FBUT 统计学显著下降，而在 eINK 屏幕上则无统计学显著下降。在亮、暗环境下，参与者在阅读 OLED 屏幕后 NIKTMH 统计学显著下降，而 eINK 屏幕对 NIKTMH 的影响较小。在阅读 OLED 屏幕后，眼表发红、OSDI 和 CVS-Q 评分明显升高，而 eINK 屏幕对这些指标的影响较小。在阅读任务中，OLED 亚组的眨眼率逐渐增加，而 eINK 亚组则无统计学显著差异。我们的研究表明，阅读 OLED 屏幕会导致眼表紊乱和明显的主观不适，而阅读 eINK 屏幕可以在亮、暗环境下最大程度地减少眼表紊乱。
