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. 2014 Jul 29;9(7):e103605. doi: 10.1371/journal.pone.0103605

Figure 6. Funnel plots showing the distribution between studies comparing each outcome.

Figure 6

A, Efficacy, B, Predictability, C, Total HOAs. D, Spherical aberration. E, Coma aberration. F, Trefoil aberration.