Table 2.

Comparison of tear film breakup time among the 3 groups ($\overline{x}\pm s$).

Group	3 d after surgery (s)	15 d after surgery(s)	30 d after surgery(s)	60 d after surgery(s)
Group A (n = 33)	6.53 ± 1.02∗	8.31 ± 1.26∗	9.12 ± 1.67∗	11.87 ± 2.01∗
Group B (n = 33)	6.37 ± 1.11∗	8.18 ± 1.65∗	9.08 ± 1.71∗	11.65 ± 1.83∗
Group C (n = 33)	6.05 ± 1.06	6.62 ± 1.71	7.04 ± 1.76	7.14 ± 1.94

^∗Note: After treatment, compared with group C (P < .05).