MNREAD is an advanced near-vision acuity chart that has already been translated and validated in Greek language. Considering that no validated Greek digital near-vision test exists, our primary objective was to develop and validate a digital near-vision reading test based on the fundamental properties of the Greek printed MNREAD (MNREAD-GR). This is a prospective, comparative study. A digital near-vision chart was developed (Democritus Digital Acuity Reading Test – DDART) with text size calibration, audio recording for automatic reading timing, as well as automatic calculation of reading acuity (RA), maximum reading speed (MRS), critical print size (CPS) and reading accessibility index (ACC). Normal and low vision subjects participated in the validation process, responding to MNREAD-GR and DDART at the same day, at a 40 cm viewing distance. Differences in all parameters between the charts were compared with t-test and intraclass correlation coefficients (ICCs). Within 15 days, all participants responded again to DDART in a different set of sentences to assess its test-retest reliability. One hundred patients (normal vision group - NVG: 70 patients; low vision group - LVG: 30 patients) responded to both reading tests. Non-significant differences were detected for all parameters between DDART and MNREAD-GR except for MRS and ACC that were significantly higher in MNREAD-GR in NVG (p < 0.01). NVG participants demonstrated sufficient ICCs that ranged from 0.854 to 0.963, while LVG demonstrated ICCs for RA, ACC, MRS and CPS equal to 0.986, 0.894, 0.794 and 0.723, respectively. All parameters calculated with DDART demonstrated excellent test-retest reliability (ICCs: 0.903 – 0.956). The proposed reading test presented comparable validity and repeatability to MNREAD-GR suggesting that it can be used both in normal and low vision Greek patients. ClinicalTrials.gov, NCT04242836 . Registered 24 January 2020 – Retrospectively registered.

中文翻译：

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为正常和低视力成人引入数字近视阅读测试：开发和验证

MNREAD 是一种先进的近视力表，已经用希腊语翻译和验证。考虑到不存在经过验证的希腊数字近视测试，我们的主要目标是开发和验证基于希腊印刷 MNREAD (MNREAD-GR) 基本特性的数字近视阅读测试。这是一项前瞻性的比较研究。开发了一种数字近视力图表（Democritus 数字视力阅读测试 - DDART），具有文本大小校准、自动阅读计时的音频记录，以及阅读敏锐度 (RA)、最大阅读速度 (MRS)、关键打印的自动计算大小（CPS）和阅读无障碍指数（ACC）。正常和低视力受试者参与了验证过程，在同一天以 40 厘米的观看距离响应 MNREAD-GR 和 DDART。将图表之间所有参数的差异与 t 检验和组内相关系数 (ICC) 进行比较。在 15 天内，所有参与者以不同的句子集再次对 DDART 做出回应，以评估其重测信度。一百名患者（正常视力组 - NVG：70 名患者；低视力组 - LVG：30 名患者）对两种阅读测试都有反应。DDART 和 MNREAD-GR 之间的所有参数均检测到非显着差异，但 NVG 中 MNREAD-GR 中的 MRS 和 ACC 显着更高（p < 0.01）。NVG 参与者展示了足够的 ICC，范围从 0.854 到 0.963，而 LVG 展示了 RA、ACC、MRS 和 CPS 的 ICC 分别等于 0.986、0.894、0.794 和 0.723。使用 DDART 计算的所有参数都表现出出色的重测可靠性（ICC：0.903 – 0.956）。提议的阅读测试与 MNREAD-GR 具有相当的有效性和可重复性，表明它可以用于正常和低视力希腊患者。ClinicalTrials.gov，NCT04242836。2020 年 1 月 24 日注册——追溯注册。