Q-value customized versus wavefront-optimized ablation in femtosecond laser-assisted LASIK for myopia and myopic astigmatism: a prospective contralateral comparative study

Table 3 Pachymetry changes in both treatment groups

Parameter	Ablation profile groups Mean ± SE 95% CI (LB, UB)		P value ^b
Parameter	Custom-Q profile (n = 40)	WFO profile (n = 40)	P value ^b
Pachy. pupil center (μm)
Preoperative	539.00 ± 4.50 (530, 548)	539.00 ± 4.50 (530, 548)	0.973
Postoperative	449.00 ± 7.80 (433, 464.90)	470.00 ± 7.30 (455, 485)	0.044
Difference	90.00 ± 6.40 (77, 102.90)	69.00 ± 6.20 (57, 82)	0.011
P value^a	< 0.001	< 0.001
Mid-peripheral Pachy. (μm)
Preoperative	572.00 ± 4.80 (562, 582)	574.00 ± 4.70 (564, 583)	0.744
Postoperative	519.00 ± 6.00 (506.70, 530.90)	527.00 ± 6.10 (514.40, 539.00)	0.397
Difference	53.00 ± 3.60 (45.90, 60.60)	46.9.00 ± 4.40 (38.00, 55.70)	0.256
P value ^a	< 0.001	< 0.001

Pachy. = pachymetry; WFO = wavefront-optimized. P values in bold indicate statistical significance
^aP value of change between pre- and postoperative values (intra-group)
^bP value of difference between custom-Q and WFO groups (inter-group)

ISSN: 2326-0254