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Table 5 Comparison of reading parameters between digital and printed optotype in the proposed method and in the study of Calabrèse et al. [16]

From: Introduction of a digital near-vision reading test for normal and low vision adults: development and validation

  Patient group This study
Mean ± SD
[95% CI]
Calabrèse et al. [16]
Mean ± SD
[95% CI]
MNREAD-GR DDART Printed Digital
RA (logMAR) NVG 0.23 ± 0.19 [0.18, 0.27] 0.24 ± 0.17 [0.20, 0.28] −0.13 ± 0.10 [−0.15, −0.12] −0.14 ± 0.20 [−0.17, −0.11]
LVG 0.98 ± 0.18 [0.91, 1.05] 0.97 ± 0.18 [0.90, 1.03] 0.77 ± 0.40 [0.65, 0.89] 0.74 ± 0.47 [0.60, 0.88]
MRS (wpm) NVG 196.36 ± 36.09 [187.75, 204.96] 183.56 ± 38.71 [174.33, 192.79] 182 ± 39.3 [174, 186] 166 ± 39.32 [158, 170]
LVG 83.88 ± 34.47 [71.01, 96.75] 81.89 ± 38.87 [67.38, 96.4] 85 ± 48.5 [71, 100] 83 ± 60.2 [68, 104]
CPS (logMAR) NVG 0.40 ± 0.21 [0.35, 0.45] 0.385 ± 0.20 [0.34, 0.43] 0.09 ± 0.07 [0.09, 0.11] 0.06 ± 0.33 [0.01, 0.11]
LVG 1.09 ± 0.19 [1.02, 1.16] 1.055 ± 0.18 [0.99, 1.12] 1.02 ± 0.75 [0.9, 1.13] 1.00 ± 0.98 [0.85, 1.15]
ACC NVG 0.94 ± 0.20 [0.89, 0.99] 0.885 ± 0.20 [0.84, 0.93] 0.92 ± 0.16 [0.89, 0.94] 0.83 ± 0.26 [0.79, 0.87]
LVG 0.295 ± 0.14 [0.17, 0.42] 0.31 ± 0.15 [0.18, 0.43] 0.36 ± 0.22 [0.29, 0.42] 0.37 ± 0.28 [0.28, 0.45]
  1. ACC = reading accessibility index; CPS = critical print size; DDART = Democritus Digital Acuity Reading Test; LVG = low vision group; MNREAD-GR = Greek version of the MNREAD acuity chart; MRS = maximum reading speed; NVG = normal vision group; RA = reading acuity; wpm = words per minute