The +6.00 D power , averaged across lens materials , induced significantly greater central swelling than the -10.00 and -3.00 D ( Re-ANOVA , p < 0.001 ) , ( 7.72.9 % vs. 6.82.8 % and 6.52.5 % respectively ) but there was no difference between -10.00 and -3.00 D. Averaged for power , lotrafilcon A induced the least ( 6.22.8 % ) and galyfilcon A the most ( 7.63.0 % ) swelling at the center ( Re-ANOVA , p < 0.001 ) .