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Table 7 Change of total high order wavefront aberration (μm) before and after tablet computer watching was compared

From: The effect of Vaccinium uliginosum extract on tablet computer-induced asthenopia: randomized placebo-controlled study

 

Treatment Group

DA9301

Placebo

n = 26

n = 24

Before video stimulus

After video stimulus

p-value

Before video stimulus

After video stimulus

p-value

Baseline (Visit 2)

 Mean (SD)

2.33 (2.05)

2.32 (1.90)

0.451

2.51 (2.46)

2.61 (2.62)

0.856

 Median (Min, Max)

1.55 (0.31,7.08)

1.7 (0.23,6.50)

1.49 (0.36,9.14)

1.4 (0.35,9.97)

Visit 3

 Mean (SD)

2.18 (1.83)

2.27 (1.93)

0.715

2.49 (2.36)

2.53 (2.33)

0.633

 Median (Min, Max)

1.53 (0.42,5.95)

1.7 (0.27,6.92)

1.92 (0.27,7.69)

1.8 (0.36,7.74)

  1. p-value obtained from one-sided paired t-test. If p-value < 0.05, then significant