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Table 2 Optical quality comparison of participants before after artificial tears application

From: Effect of artificial tears on dynamic optical quality in patients with dry eye disease

  n Mean OSI SD OSI
Baseline 5 min 30 min Baseline 5 min 30 min
Normal control 31 0.54±0.23 0.69±0.27 0.56±0.29 0.12±0.06 0.20±0.10 0.13±0.05
t value    -2.418 -0.338   -3.802 -0.481
P value    0.019 0.737   0.000 0.632
Mild ADDE 28 0.83±0.38 1.00±0.48 0.91±0.53 0.40±0.70 0.13±0.05 0.28±0.27
t value    -1.444 -0.597   1.966 0.848
P value    0.155 0.553   0.066 0.402
Severe ADDE 31 1.05±0.65 0.78±0.36 0.83±0.76 0.47±0.72 0.15±0.08 0.36±0.38
t value    2.073 1.214   2.508 0.752
P value    0.044 0.299   0.018 0.455
  1. Note: Data were expressed as the means ± SD. "Mean OSI" and "SD OSI" refer to the mean value and standard deviation of the 20-second OSI