Table 1.

Study Variables

Variable	Definition
R	Radius of curvature, mm
t	Thickness, microns (μ)
CCS	Corneal contribution to stress, R/2t, dimensionless
Cspot-max	Magnitude of 2-mm zone of maximum tangential curvature, diopters
Pach-min	Magnitude of 2-mm zone of minimum pachymetry, microns
CCSmax	Magnitude of 2-mm zone of maximum CCS, dimensionless
CCSmin	Magnitude of 2-mm zone of minimum CCS, dimensionless
CCSdiff	Magnitude of CCSmax – CCSmin, dimensionless