Free Papers

Comparison of refractive stability and long-term visual outcome with two different presbyopia-correcting IOLs: the imapct of lens design

Free Paper Details

First Author: Z.Nagy HUNGARY

Co Author(s):    H. Kiss   É. Juhász   G. Sándor   K. Kránitz   Á. Dunai        

Abstract Details

Purpose:

To test the visual performance of two multifocal IOLs with different materials and designs, and to assess the long-term stability of refractive and visual outcomes.

Setting:

Department of Ophthalmology, Faculty of Medicine, Semmelweis University, Budapest, Hungary.

Methods:

In this prospective, comparative study including 100 eyes of 50 cataract patients, bilateral implantation of either the hydrophilic trifocal Liberty® 677MY capsular bag IOL by Medicontur Ltd with double C-loop haptics or the hydrophobic AcrySof® IQ ReSTOR® SN6AD1 lens (Alcon Inc.) with modified L- haptics was performed during routine cataract surgery. Refractive outcomes, visual acuities for far, intermediate and near distances, and defocus curves were assessed throughout a two-year follow-up period. The results of the two lenses were not only compared to each other, but possible changes in the visual performance of the same lens over time were also evaluated.

Results:

Superior visual and refractive outcomes could be observed in the Liberty® group compared to the AcrySof group during the two-year follow-up. Results confirmed long-term stability in the case of the Liberty lens, while a refractive shift towards negative values could be observed with the AcrySof IOL. Defocus curve evaluations support these findings: while the curves of the Liberty lens are stable over time (p=0.5119), the defocus curves of the AcrySof eyes show a significant decrease between the 6th and 12th postoperative months (p<0.0001).

Conclusions:

Our work has highlighted that it is not enough to compare the visual and refractive outcomes of different multifocal IOLs at a particular follow-up visit, as although the outcomes with different lenses might seem comparable, results are not guaranteed to be stable in the long term. The design of presbyopia-correcting lenses seems to have major impact on the long-term stability of surgical results. The findings of our present investigation suggest that the Medicontur Liberty lens is a reliable choice also in the long-term.

Financial Disclosure:

-