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

Table 1

Means, standard deviation, and ranges of different K readings in diopters.

	Kr†	Kc‡	EKR§
Mean	39.04	39.27	39.70
SD	2.19	2.35	1.99
Min	30.95	31.78	34.05
Max	44.30	44.91	44.35

†Kr = real Km obtained adding the effective treatment calculated at the corneal plane to the preoperative equivalent K readings. ‡Kc = K readings calculated with the previously published formula²³. §EKR = Pentacam postoperative equivalent K readings.