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Defocus curves and intermediate vision in a multifocal diffractive IOL with adjusted apodization

Poster Details

First Author: R.Lapid-Gortzak THE NETHERLANDS

Co Author(s):    J. van der Linden   I. van der Meulen           

Abstract Details


To report the results of defocus curves and intermediate vision with a new apodized diffractive IOL in which the apodization was adjusted to benefit intermediate vision and comparison with results reported in the literature for trifocal IOLs.


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in 20 eyes of 10 patients implanted with the SeeLens MF apodized diffractive multifocal IOL (Hanita lenses, Israel), defocus curves from +3.5 to -5 D, refraction, uncorrected and corrected distance, intermediate and near vision were measured and analyzed. These outcomes were compared to results reported in the literature of trifocal IOLs.


Uncorrected distance visual acuity (UDVA) was -0.04 + 0.09 logMAR, corrected distance visual acuity (CDVA) was -0.12 + 0.05, mean spherical equivalent refraction (SE) was +0.02D + 0.44. Maximal reading acuity was achieved at a defocus of -2.5 (40cm) with a logMAR of -0.04 + 0.08. At a defocus of -1.5 D (67cm) the mean visual acuity was 0.16 + 0.15 logMAR, and at -2.0D (50 cm) the mean visual acuity was 0.01 + 0.11 log MAR. These results are better than those reported in the literature for trifocal IOLs, were the maximal distance, near and intermediate are less.


The apodized diffractive multifocal IOL with an optimized diffractive function and apodization allows for excellent uncorrected visual acuity, also in the intermediate range. This possibly precludes the need for a trifocal implant, in which trifocality is achieved by adding a set of diffractive rings for the secondary harmonyin order to enhance the intermediate focus. FINANCIAL INTEREST: NONE

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