Martínez-Espert, AnabelAnabelMartínez-EspertKyriazis, AthanasiosAthanasiosKyriazisVan Erps, JürgenJürgenVan ErpsFurlan, Walter D.Walter D.FurlanPérez-Merino, PabloPabloPérez-MerinoMartinez-Espert, AnabelAnabelMartinez-EspertVan Erps, JurgenJurgenVan ErpsPerez-Merino, PabloPabloPerez-Merino2026-09-172026-09-1720262708-5260https://imec-publications.be/handle/20.500.12860/60419This study demonstrates the fabrication and characterization of an aperiodic diffractive intraocular lens (IOL) prototype based on the Devil’s staircase function, using two-photon polymerization (2PP). The surface profile was quantified using an optical profilometer. Through-focus modulation transfer function (TF-MTF) and the area under the modulation transfer function (MTFa) were measured on a custom optical bench. Optical simulations were performed to model the expected performance. The fabricated prototype shows that the aperiodic stepwise profile is reproduced with micron-level lateral accuracy (average base-width deviation <6.55 μm) and submicron step-height accuracy (step height error: <20 nm) across the 6-mm optical zone. The measured TF-MTF and MTFa match the predicted trifocal optical performance, exhibiting distinct focal peaks at far (0.0 D), intermediate (+1.75 D), and near (+3.6 D). These findings demonstrate the promising potential of 2PP for the rapid and precise prototyping of aperiodic diffractive IOL designs.engJournal article10.1117/1.jom.6.2.021005WOS:001809012300004DESIGNPERFORMANCE2708-5260