Effects of varying illumination on ocular aberrations and aberration compensation before and after small incision Lenticule extraction: a prospective cohort study

Table 3 Pre- and postoperative differences in refraction between mesopic and photopic illumination

Refraction	Preoperative differences^a	Postoperative differences^a
Sphere (D)^b	−0.234 [0.345]	−0.676 [0.873]
Cylinder (D)^b	−0.102 [0.392]	−0.217 [0.435]

Data are presented as the median [interquartile range].
D diopters.
^aThe value under mesopic illumination minus the value under photopic illumination
^bResults from wavefront refraction

ISSN: 1471-2415