Table 2.

Changes in TBUT, Schirmer’s I test score, ocular surface disease index (OSDI), and lipid layer thickness (LLT) in the DQS group and the HA group.

	Preoperative	Postoperative 3 weeks	Postoperative 7 weeks	Postoperative 15 weeks	pa	pb pre vs 3 weeks	pc pre vs 7 weeks	pd pre vs 15 weeks	p value*
TBUT
DQS	13.17 ± 2.26	13.64 ± 1.68	13.93 ± 1.61	14.57 ± 0.96	0.023	0.734	0.351	0.014	0.011
HA	12.37 ± 1.97	12.67 ± 2.25	13.16 ± 1.83	13.41 ± 1.56	0.235	0.953	0.486	0.245
Schirmer’s I test score
DQS	12.74 ± 2.56	13.23 ± 2.93	13.22 ± 3.11	13.44 ± 3.12	0.908	0.931	0.931	0.931	0.508
HA	12.04 ± 2.51	12.33 ± 2.49	13.12 ± 2.84	13.00 ± 3.03	0.457	0.983	0.519	0.619
OSDI
DQS	15.24 ± 8.59	8.28 ± 5.92	7.80 ± 5.81	6.36 ± 5.27	< 0.001	0.002	0.001	< 0.001	0.009
HA	17.94 ± 7.78	12.74 ± 7.77	13.16 ± 7.54	12.79 ± 7.97	0.119	0.174	0.237	0.181
LLT
DQS	87.78 ± 13.55	92.57 ± 10.79	92.42 ± 10.80	95.96 ± 7.22	0.010	0.321	0.348	0.004	< 0.001
HA	79.21 ± 18.33	77.87 ± 20.41	79.67 ± 22.59	84.96 ± 15.74	0.606	0.995	1.000	0.735

Statistically significant p values are marked in bold (p < 0.05).

TBUT tear break up time, OSDI ocular surface disease index, LLT lipid layer thickness.

*p value < 0.05 by repeated-measures analysis of variance.

^ap value < 0.05 one-way analysis followed by post-hoc Tukey analysis.

^bBetween preoperative visit and postoperative 3 weeks.

^cBetween preoperative visit and postoperative 7 weeks.

^dBetween preoperative visit and postoperative 15 weeks.