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. 2013 Aug;61(8):456–460. doi: 10.4103/0301-4738.116064

Figure 4.

Figure 4

(a) Double-pass image of the PSF of a patient with a central cone on topography after pIOL implantation. (b) Good functional outcome illustrated by the good double-pass (OQAS) values and a good extrapolated contrast level. (c) Zernike analysis of the corneal wavefront aberrations with low RMS total and HOAs (c/deg = cycles per degree; HOA = higher-order aberration; LOA = lower-order aberration; MTF = modulation transfer function; OQAS = Optical Quality Analysis System; OSI = optical scatter index; RMS = root mean square)