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Table 2 Group comparisons preoperatively

From: Impact of 0.1% sodium hyaluronate and 0.2% sodium hyaluronate artificial tears on postoperative discomfort following cataract extraction surgery: a comparative study

  Preoperative
Parameter (mean ± SD) CG SG p-value
CCT (μm) 537 ± 36 544 ± 34 0.22
CCS (cm) 5.76 ± 1.39 5.74 ± 1.34 0.35
TBUT (secs) 11.51 ± 7.08 11.92 ± 6.92 0.69
Schirmer (mm) 11.64 ± 3.43 11.93 ± 3.60 0.58
FBS NA NA NA
BD NA NA NA
SS NA NA NA
TS NA NA NA
SDI NA NA NA
  1. CG control group, SG study group, CCT central corneal thickness, CCS central corneal sensitivity, TBUT tear break up time, FBS foreign body sensation, BD blinking discomfort, SS stinging sensation, TS tearing sensation, SDI surface discomfort index, SD standard deviation, NA not applicable