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Table 2 Comparison of reading parameters

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

Normal Vision Group
Reading parameter Mean ± SD [95% CI] Difference ± SD [95% CI] p
MNREAD-GR DDART
RA (logMAR) 0.23 ± 0.19 [0.18, 0.27] 0.24 ± 0.17 [0.20, 0.28] −0.01 ± 0.07 [−0.03, 0.002] 0.10
MRS (wpm) 196.36 ± 36.09 [187.75, 204.96] 183.56 ± 38.71 [174.33, 192.79] 12.8 ± 21.93 [7.57, 18.03] <  0.001*
CPS (logMAR) 0.40 ± 0.21 [0.35, 0.45] 0.385 ± 0.20 [0.34, 0.43] 0.015 ± 0.15 [−0.02, 0.05] 0.42
ACC 0.94 ± 0.20 [0.89, 0.99] 0.885 ± 0.20 [0.84, 0.93] 0.055 ± 0.10 [0.03, 0.08] <  0.001*
Low Vision Group
Reading parameter Mean ± SD [95% CI] Difference ± SD [95% CI] p
  MNREAD-GR DDART
RA (logMAR) 0.98 ± 0.18 [0.91, 1.05] 0.97 ± 0.18 [0.90, 1.03] 0.01 ± 0.04 [−0.002, 0.03] 0.08
MRS (wpm) 83.88 ± 34.47 [71.01, 96.75] 81.89 ± 38.87 [67.38, 96.4] 1.99 ± 30.67 [−9.46, 13.44] 0.73
CPS (logMAR) 1.09 ± 0.19 [1.02, 1.16] 1.055 ± 0.18 [0.99, 1.12] 0.035 ± 0.17 [−0.03, 0.10] 0.25
ACC 0.295 ± 0.14 [0.17, 0.42] 0.31 ± 0.15 [0.18, 0.43] −0.015 ± 0.09 [−0.05, 0.02] 0.40
All study participants
Reading parameter Mean ± SD [95% CI] Difference ± SD [95% CI] p
  MNREAD-GR DDART
RA (logMAR) 0.45 ± 0.39 [0.38, 0.53] 0.46 ± 0.37 [0.39, 0.53] −0.006 ± 0.06 [−0.02, 0.01] 0.34
MRS (wpm) 162.61 ± 62.77 [150.16, 175.07] 153.06 ± 60.66 [141.02, 165.09] 9.55 ± 25.21 [−4.55, 14.56] <  0.001*
CPS (logMAR) 0.61 ± 0.38 [0.53, 0.68] 0.59 ± 0.37 [0.51, 0.66] 0.02 ± 0.15 [−0.01, 0.05] 0.18
ACC 0.74 ± 0.35 [0.68, 0.81] 0.71 ± 0.32 [0.65, 0.78] 0.03 ± 0.10 [0.01, 0.05] <  0.001*
  1. *p < 0.05
  2. ACC = reading accessibility index; CI = confidence interval; CPS = critical print size; DDART = Democritus Digital Acuity Reading Test; MNREAD-GR = Greek version of the MNREAD acuity chart; MRS = maximum reading speed; RA = reading acuity; SD = standard deviation; wpm = words per minute