TABLE 3.

RELATIONSHIP OF PATIENT AND SURGERY-SPECIFIC ECTASIA RISK VARIABLES TO ABSOLUTE STRAIN IN THE ANTERIOR RESIDUAL STROMA ACROSS ALL MYOPIC SURGICAL SIMULATIONS (N = 280)^*

LINEAR REGRESSION MODEL AND RESULTS:	CONSTANT	COEFFICIENT	P VALUE	R-SQUARED
Kmax (D)	0.01770	0.000203	<.001	9.0%
Kmax Distance (mm)	0.02734	−0.000087	.7	0%
Anterior Corneal Astigmatism (D)	0.02651	0.000385	<.001	4.9%
CCT (µm)	0.05112	−0.000045	<.001	29.5%
Thinnest Point Value (µm)	0.04882	−0.000041	<.001	29.9%
Thinnest Point Distance (mm)	0.02594	0.001437	.001	3.9%
Residual Stromal Bed Thickness, RSB (µm)	0.04282	−0.000043	<.001	86.7%
Percent Stromal Tissue Altered, PSTA (%)	0.02172	0.000221	<.001	71.7%

^*D = Diopters, µm = micrometers, mm = millimeters from the corneal vertex calculated as the absolute magnitude of the resultant vector of the x and y decentration of the curvature or thickness feature, CCT = central corneal thickness (at vertex). Strain = mean maximum principal strain in the anterior residual stroma acquired from finite element analyses of all preoperative and postoperative models