Calculation of the Real Corneal Refractive Power after Photorefractive Keratectomy Using Pentacam, When Only the Preoperative Refractive Error is Known

Figure 3

(a) Scatterplot showing correlation between real Km (Kr) and K readings calculated with the previously published formula (Kc) in diopters (D). Solid = correlation line and dashed = bisector. (b) Bland and Altman plot showing correlation between real Km (Kr) and K readings calculated with the previously published formula (Kc) in diopters (D), with 95% LoA (range: −1.96 sd to +1.96 sd).

(a)

(b)