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

Table 2

Corneal power measured with different methods.

calculation method	Mean ± SD	Range
(D)	39.70 ± 1.86	34.21 to 43.59
(D)	39.84 ± 1.72	34.58 to 43.38
TNP (D)	39.73 ± 1.71	34.49 to 43.26
(D)	41.31 ± 1.66	36.34 to 44.79
Methods requiring previous data
(D)	40.60 ± 1.92	34.84 to 44.53
(D)	40.25 ± 1.74	35.07 to 43.90
(D)	40.79 ± 2.11	33.94 to 44.80
(D)	40.81 ± 1.80	35.45 to 44.58
(D)	41.00 ± 1.77	35.72 to 44.71
Methods not requiring previous data
(D)	39.66 ± 1.74	34.03 to 43.01
(D)	41.04 ± 1.85	35.56 to 44.92
(D)	40.29 ± 1.90	34.68 to 44.26

= 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.