Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery

Table 3

Bland and Altman analysis outcomes of the comparison between and the corneal power obtained with other methods.

	(D)	LoA (D)	Range (D)	value
– (D)	0.14 ± 0.24	−0.33 to 0.60	−0.43 to 0.70	<0.01
TNP – (D)	0.03 ± 0.24	−0.50 to 0.44	−0.55 to 0.61	0.319
– (D)	1.61 ± 0.19	1.23 to 1.99	1.20 to 2.18	<0.01
Methods requiring previous data
– (D)	0.90 ± 0.32	0.26 to 1.53	0.04 to 1.65	<0.01
– (D)	0.56 ± 0.20	0.15 to 0.96	0.04 to 1.02	<0.01
– (D)	1.09 ± 0.84	−0.55 to 2.73	−1.13 to 3.96	<0.01
– (D)	1.11 ± 0.23	0.67 to 1.55	0.49 to 1.65	<0.01
– (D)	1.30 ± 0.19	0.93 to 1.67	0.80 to 1.72	<0.01
Methods not requiring previous data
– (D)	−0.04 ± 0.17	−0.37 to 0.29	−0.58 to 0.12	0.09
– (D)	1.34 ± 0.00	1.33 to 1.35	1.32 to 1.35	<0.01
– (D)	0.59 ± 0.04	0.52 to 0.67	0.48 to 0.67	<0.01

= adjusted keratometric corneal power; = Gaussian corneal power; TNP = True Net Power; = keratometric corneal power using ; = corneal power obtained using Awwad formula; = corneal power obtained using Camellin formula; = corneal power obtained using Clinical History method; = corneal power obtained using Haigis-L formula; = corneal power obtained using Jarade formula; = corneal power obtained using Savini formula; = corneal power obtained using Seitz formula; = corneal power obtained using Shammas formula.