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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