Changes in Optical Quality Induced by Tilt and Decentration of a Trifocal IOL and a Novel Extended Depth of Focus IOL in Eyes With Corneal Myopic Ablations

Purpose To assess the effect of decentration and tilt combined with prior myopic ablations on optical performance a trifocal intraocular lens (IOL) novel IOL an extended depth focus (EDOF) design. Methods The XACT Mono-EDOF ME4 (Santen Pharmaceutical Co Ltd) FineVision (PhysIOL) IOLs were analyzed without simulated previous ablations. quality was evaluated PMTF bench (LAMBDA-X). through-focus modulation transfer function (MTF) curves recorded. Measurements done for three situations: centered, 0.4 mm decentered, 4 degrees tilted. Results showed peaks vision EDOF far distance peak intermediate addition. When or induced, negligible changes but -0.50 diopters (D) shift overall curve. With ablation, D also better results found at -1.00 D. ablations, when then negative shifts over found. Conclusions less affected by mis-alignments. both lenses decreased their effects misalignments higher. In patients who have undergone corneal ablation procedures, proper alignment implanted obtaining effective emmetropia becomes even more critical. [J Refract Surg. 2021;37(8):532-537.].