. 2017 Jan 25;31(1):11–18. doi: 10.1016/j.sjopt.2017.01.002

Table 4.

The mean corneal thickness and its P values.

Corneal thickness	Preoperative Mean ± SD Min-max	3 months Mean ± SD Min-max	P value	6 months Mean ± SD Min-max	P value	12 months Mean ± SD Min-max	P value
Central corneal thickness	486.9 ± 26.5 (411–534)	474.8 ± 28.6^AC (393–525)	<0.001^*	470.2 ± 28.3^AB (390–521)	<0.001^*	467.6 ± 27.9^CB (390–520)	<0.001^*
Thinnest location	472.15 ± 31.3	456.09 ± 33.2^AC	<0.001^*	449.5 ± 32.0^AB	<0.001^*	448.2 ± 32.2 ^CB	<0.001^*
Thinnest location	(405–529)	(386–516)	<0.001^*	(385–511)	<0.001^*	(380–511)	<0.001^*

Paired samples t test. ABC: Similar letters indicate statistically significant differences (p < 0.05).

P1: difference between preoperative and after 3 months.

P2: difference between preoperative and 6 months.

P3: difference between preoperative and 12 months.

SD: Standard deviation.