Comparison of errors in ablation depth calculation after myopic femtosecond laser in situ keratomileusis in patients with different degrees of myopia: a prospective study

Table 3 Differences between measured ablation depth and predicted ablation depth

Groups	CCT (µm)				Errors in ablation depth calculation (µm)
Groups	Preoperative	1-day post operation	Measured ablation depth	Predicted ablation depth	Errors in ablation depth calculation (µm)
Low and Moderate Myopia	536.55 ± 31.20	469.60 ± 34.62	66.95 ± 13.65	66.84 ± 12.21	5.29 ± 4.97
High Myopia	539.18 ± 25.37	446.53 ± 26.43	92.64 ± 15.32	90.2 ± 9.28	8.27 ± 5.36
Very High Myopia	551.11 ± 21.16	424.22 ± 15.32	126.89 ± 8.91	110.44 ± 8.95	17.56 ± 8.00
F	1.035	12.679	89.976	97.658	20.555
p	0.359	< 0.001	< 0.001	< 0.001	< 0.001

Data are presented as mean ± SD, compared with one-way analysis of various (ANOVA). Errors in ablation depth calculation = (Measured ablation depth – Predicted ablation depth). CCT Central corneal thickness

ISSN: 1471-2415