Fig. 4From: Central corneal regularization (CCR): an alternative approach in keratoconus treatmentMean higher order corneal morphological aberrations (HOCMAs) among the groups at different diameters. (a) HOCMAs at 2 mm; (b) HOCMAs at 3.5 mm; (c) HOCMAs at 5 mm; (d) HOCMAs at 6 mmBack to article page