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

Table 2 Pre- and postoperative refraction under mesopic and photopic illumination

Refraction	Mesopic illumination	Photopic illumination	t	p-value^a
Preoperative refraction
Sphere (D)^b	−6.146 [2.356]	−6.030 [2.619]	−4.589	< .001
Cylinder (D)^b	−0.911 [1.091]	− 0.943 [0.581]	.952	.347
Postoperative refraction
Sphere (D)^b	−1.002 [1.087]	−0.327 [0.542]	−5.853	< .001
Cylinder (D)^b	−0.608 [0.414]	−0.382 [0.319]	−3.013	.005

Data are presented as the median [interquartile range].
D diopters.
^aDifferences between mesopic and photopic illumination; two-sample paired t-test
^bResults from wavefront refraction

ISSN: 1471-2415