Calculation of Unknown Preoperative K Readings in Postrefractive Surgery Patients

Table 4

Comparison between the two methods to calculate the preoperative keratometry readings without the knowledge of preoperative parameters.

Range	Current study		Preoperative mean keratometry = 43.5
	n	%	n	%
±0.5 D	54	32.1	39	23.2
±1 D	123	73.2	120	71.4
±2 D	160	95.2	156	92.9
>±2 D	8	4.8	12	7.1

n = number of eyes; % = percentage of eyes; D = diopters.