Table 3.

Pentacam measurements versus ultrasound pachymetry measurements (μm)

Parameters	Bias	SD	95% Limits of Agreement (μm)
			Upper	Lower	Width
Preoperative corneal pachymetry
Corneal Vertex	−1.59	7.80	13.70	−16.88	30.58
Pupil Center	−1.09	7.64	13.87	−16.06	29.93
Postoperative corneal pachymetry
Corneal Vertex	2.07	6.46	14.73	−10.60	25.34
Pupil Center	2.15	6.51	14.91	−10.61	25.52