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First Author: D.Madrid-Costa SPAIN
Co Author(s): J. Ruiz-Alcocer S. García-Lázaro T. Ferrer-Blasco R. Montés-Micó
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To compare the optical quality of two new trifocal intraocular lenses (IOLs) for different pupil sizes at different focal points.
University of Valencia
The AT LISA tri 839MP and the FineVision IOLs were evaluated and measured in an optical bench at different focal points and at four different apertures (2.0, 3.0, 3.75 and 4.5mm). The optical quality was quantified by the through-focus Modultation Transfer Function (MTF) and by the MTF at a frequency of 50cycles/mm for four focal points (0.0, -1.5, -3.0 and -3.5D).
The through-focus MTF curves showed three peaks for both lenses (far, intermediate and near focal points). At the 0.0D focal point, the FineVision obtained better results for larger pupils. At the -1.5D focal point both lenses performed worse for larger pupils. At the -3.0D, the FineVision obtained better results for all apertures. At the -3.5D focal point, the AT LISA performed better than the FineVision for larger pupils.
The trifocal IOLs studied provide peaks of MTF value at far, intermediate and near focal points. For larger pupils, the FineVision seems to provide better results at far focal points, while the AT LISA achieve better results at intermediate and near focal points and less pupil dependence.