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

Table 4

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	−0.60 to 0.33	−0.70 to 0.43	<0.01
TNP – (D)	−0.11 ± 0.01	−0.13 to −0.09	−0.08 to −0.13	<0.01
– (D)	1.47 ± 0.19	1.10 to 1.84	1.07 to 1.97	<0.01
Methods requiring previous data
– (D)	0.76 ± 0.29	0.18 to 1.34	−0.28 to 1.26	<0.01
– (D)	0.42 ± 0.14	0.15 to 0.68	0.04 to 0.78	<0.01
– (D)	0.95 ± 0.83	−0.67 to 2.58	−1.55 to 3.76	<0.01
– (D)	0.97 ± 0.18	0.63 to 1.32	0.40 to 1.36	<0.01
– (D)	1.16 ± 0.14	0.88 to 1.45	0.70 to 1.49	<0.01
Methods not requiring previous data
– (D)	−0.18 ± 0.21	−0.60 to 0.23	−0.71 to 0.40	<0.01
– (D)	0.45 ± 0.26	−0.06 to 0.97	−0.18 to 1.04	<0.01
– (D)	1.20 ± 0.23	0.74 to 1.66	0.64 to 1.67	<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.