| 백굴F-049 |
| The effect of adjustments in apodization pattern of diffractive multifocal IOLs on straylight measurements (disability glare). |
| 1. Dept. Ophthalmology, Academic medical center, University of Amsterdam, the Netherlands
2. Neuroscience Institute, Royal Dutch Academy of Sciences
3. Retina Total Eye Care, Driebergen, the Netherlands |
| Ruth Lapid 1,3, Jan Willem van der Linden 1, Ivanka van der Meulen 1,3 , and Tom van den Berg 2 |
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Purpose : To evaluate the differences in straylight between eyes implanted with different diffractive multifocal IOLs. The 2 lens types have different apodization patterns, in which in the newer lens type the pattern has been adjusted in an effort to reduce halos and glare from the diffractive rings.
Methods : Routinely obtained straylight measurements at 3 months post standard phacoemulsification procedures for either cataract or refractive lens procedures were evaluated and compared. Patients were implanted with either the SeeLens MF or BunnyLens with the identical optic design, and different haptic design (Hanita lenses, Israel) a multifocal hydrophilic apodized diffractive IOL, or the SN6AD1 IOL (Alcon, USA). Postoperative straylight values, visual acuity, and refractive outcomes were compared.
Results : In 84 eyes a Hanita MF and in 79 eyes the SN6AD1 was implanted. The difference in straylight between the Hanita MF lenses and the SN6AD1 was 0.09461 (p<0.01) , with the Hanita MF types having less straylight.
In terms of corrected distance visual acuity (CDVA) the Hanita MF group improved from logMAR 0.05 + 0.08 to logMAR 0.00 + 0.04. In the SN6AD1 group the CDVA improved from logMAR 0.05 + 0.08 to logMAR 0.01+ 0.05.
Refraction changed from preoperatively +1.36 D + 1.99 to +0.08 D + 0.52 postoperatively in the Hanita MF group, and from +0.35 D + 2.71 preoperatively to +0.08 D + 0.32 postoperatively in the SN6AD1 group.
Conclusion : A mean age-adjusted difference in straylight of 0.0707 log (s) was found between the Hanita MF and the SN6AD1, in favor of the Hanita MF lens (p<0.0056). Clinically, a mean difference of 0.1 log(s) is comparable to 1 line on the visual acuity chart. In terms of postoperative CDVA and spherical equivalent refraction, the lenses performed equally well. Straylight improved more in the lenses with adjusted apodization patterns.
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