Calculation of Unknown Preoperative K Readings in Postrefractive Surgery Patients

Table 1

Differences (in diopters) in 168 right eyes between preoperative keratometry readings and the calculated ones with the knowledge of the effective treatment.

	Effective treatment calculated at the corneal plane	Rosa et al. 2004
Mean	−0.61	0.01
SD	0.94	0.86
Min	−3.94	−2.61
Max	2.05	2.34
	<0.01	0.82