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