Development of a Reading Accessibility Index Using the MNREAD Acuity Chart
Development of a Reading Accessibility Index Using the MNREAD Acuity Chart
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DOI：
10.1001/jamaophthalmol.2015.6097
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发表时间：
2016-04-01
影响因子：
8.1
通讯作者：
Legge, Gordon E.
中科院分区：
文献类型：
--
作者：
Calabrese, Aurelie;Owsley, Cynthia;Legge, Gordon E.
我们定义了一个阅读辅助指数来评估正常视力和低视力个体的阅读。目的比较阅读可及性指数与白内障对活动能力的影响（ICOM）研究的数据。设计、环境和参与者本研究是对ICOM研究的二次数据分析，该研究于2014年7月1日至2015年9月20日在阿拉巴马州12家眼科诊所进行，时间为1994年10月1日至1996年3月31日。参与者是321名患有白内障（n = 92）、假性晶状体（n = 131）或无白内障的天然晶状体（n = 98）的成年人。阅读可及性指数（以下简称ACC，表示可及性的前三个字母）被定义为在MNREAD视力表（精密视力）上测量的10个最大印刷尺寸的个人平均阅读速度（40厘米处最小分辨率的0.4-1.3对数），标准化为每分钟200字，这是365名正常视力的年轻人的平均值。ACC是一种单值测量，用于捕获个人可访问的印刷尺寸范围和在此范围内的阅读流畅性。结果：研究队列包括321名参与者。年龄55 ~ 85岁，女性157例（48.9%）。ICOM研究参与者的ACCs范围从0.19到1.33，其中1.00是正常视力的年轻人的平均值。白内障组的ACC（平均[SD]， 0.65[0.18]）显著低于假性晶状体组（平均[SD]， 0.77[0.16]）和对照组（平均[SD]， 0.76 [0.19]） (P
IMPORTANCE We define a Reading Accessibility Index for evaluating reading in individuals with normal and low vision.OBJECTIVE To compare the Reading Accessibility Index with data from the Impact of Cataracts on Mobility (ICOM) study.DESIGN, SETTING, AND PARTICIPANTS This investigation was a secondary data analysis from the ICOM study performed between July 1, 2014, and September 20, 2015, at 12 eye clinics in Alabama from October 1, 1994, through March 31, 1996. Participants were 321 adults with cataract (n = 92), pseudophakia (n = 131), or natural crystalline lenses without cataract (n = 98).MAIN OUTCOMES AND MEASURES The Reading Accessibility Index (hereafter referred to using the abbreviation ACC for the first 3 letters of Accessibility) is defined as an individual's mean reading speed measured across the 10 largest print sizes on the MNREAD Acuity Chart (Precision Vision) (0.4-1.3 logarithm of the minimum angle of resolution at 40 cm), normalized by 200 words per minute, which was the mean value for a group of 365 normally sighted young adults. The ACC is a single-value measure that captures an individual's range of accessible print sizes and reading fluency within this range.RESULTS The study cohort comprised 321 participants. Their age range was 55 to 85 years, and 157 (48.9%) were female. The ACCs for the ICOM study participants ranged from 0.19 to 1.33, where 1.00 is the mean value for normally sighted young adults. The ACC for the cataract group (mean [SD], 0.65 [0.18]) was significantly lower than that for the pseudophakia group (mean [SD], 0.77 [0.16]) and the control group (mean [SD], 0.76 [0.19]) (P