Feng Henry L, Roth Daniel B, Fine Howard F, Prenner Jonathan L, Modi Kunjal K, Feuer William J
NJ Retina, Department of Ophthalmology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA.
Bascom Palmer Eye Institute, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA.
J Ophthalmol. 2017;2017:3584706. doi: 10.1155/2017/3584706. Epub 2017 Apr 20.
. To evaluate the impact of back-illuminated and nonilluminated electronic reading devices on reading speed and comfort in patients with decreased vision. . A prospective study involving a convenience sample of 167 patients at a single retina practice from January 2011 to December 2012. Participants were asked to read five different excerpts on five different media in a randomly assigned order. Media included a printed book at 12-point font (12PF), iPad2 at 12PF, iPad2 at 18-point font (18PF), Kindle2 at 12PF, and Kindle2 at 18PF. Reading speed in words per minute (WPM) and medium preference were recorded and stratified by visual acuity (VA). . Mean reading speeds in WPM: iPad2 at 18PF (217.0), iPad2 at 12PF (209.1), Kindle2 at 18PF (183.3), Kindle2 at 12PF (177.7), and printed book at 12PF (176.8). Reading speed was faster on back-illuminated media compared to nonilluminated media. Text magnification minimized losses in reading performance with worsening patient VA. The majority of participants preferred reading on the iPad2 at 18PF. . Back-illuminated devices may increase reading speed and comfort relative to nonilluminated devices and printed text, particularly in patients with decreased VA.
评估背光源和非背光源电子阅读设备对视力下降患者阅读速度和舒适度的影响。
一项前瞻性研究，纳入了2011年1月至2012年12月在一家视网膜诊所的167名患者组成的便利样本。参与者被要求按照随机分配的顺序在五种不同的介质上阅读五段不同的节选内容。介质包括12号字体（12PF）的印刷书籍、12PF的iPad2、18号字体（18PF）的iPad2、12PF的Kindle2和18PF的Kindle2。记录每分钟单词阅读速度（WPM）和对介质的偏好，并按视力（VA）进行分层。
以WPM计的平均阅读速度：18PF的iPad2（217.0）、12PF的iPad2（209.1）、18PF的Kindle2（183.3）、12PF的Kindle2（177.7）和12PF的印刷书籍（176.8）。与非背光源介质相比，背光源介质上的阅读速度更快。文本放大可将患者视力恶化时阅读性能的损失降至最低。大多数参与者更喜欢在18PF的iPad2上阅读。
相对于非背光源设备和印刷文本，背光源设备可能会提高阅读速度和舒适度，尤其是在视力下降的患者中。
