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Refractive change (final refraction - initial refraction) after four days of (left to right) application of a +5d lens (n=7), removal of a −5 D lens (n=7), and four days of red light treatment (n=5), all starting at 35 DVE. Error bars are +/− SEM. A one-way ANOVA showed significant effects (P < 0.05), starred bars indicate differences between groups via Tukey’s post-hoc HSD test. The +5 D application and −5 D removal data are from (Guo, Frost et al. 2012)
