Fig. 2From: Effects of varying illumination on ocular aberrations and aberration compensation before and after small incision Lenticule extraction: a prospective cohort studyPre- and postoperative differences in compensation for S3 to S6. (a) The proportion of eyes that exhibited a preoperative compensation effect for fourth-order aberrations (red) is significantly higher under mesopic illumination than under photopic illumination; chi-square test. (b) The proportion of eyes that exhibited a postoperative compensation effect for third- to sixth-order aberrations does not differ significantly between mesopic and photopic illumination; Chi-squared test. (S3, third-order aberration; S6, sixth-order aberration)Back to article page