IOL design and material influence in Nd:YAG laser rates for a large series of MICS IOL implantations

Session Details

Session Title: Cataract Surgery Practice Styles/PCO

Session Date/Time: Tuesday 10/10/2017 | 14:00-16:00

Paper Time: 14:56

Venue: Room 4.4

First Author: : G.Lesieur FRANCE

Co Author(s): :                        

Abstract Details

Purpose:

To study the cumulative neodymium: YAG (Nd:Yag) laser rate after 6009 implantations during cataract surgery of 5 different hydrophilic acrylic MICS lenses and 1 hydrophobic and evaluate influence of material and design.

Setting:

Centre Ophtalmologique IRIDIS, Albi, France.

Methods:

This retrospective study comprises all patients who were implanted between 2006 and the end of 2016 with one of the after 6 micro-incision IOLs: Akreos MICS and INCISE (Bausch and Lomb), CT Asphina (Carl Zeiss Meditec), MicroSlim, Micro AY and MicroPure (PhysIOL). The postoperative follow-up ranges from 1 to 132 months. The cumulative Nd: Yag laser frequency rates in all groups were calculated, and the cumulative incidence rates were defined by propensity score, Weighted Cox regression, Tuckey test, Kaplan-Meier survival analysis and Mann-Withney test with a significance threshold of 0,05.

Results:

The follow up is too short for INCISE and MicroPure to give a conclusion. So far the both IOL’s have a low ND:Yag rate event respectively (1.87% and 0.96%). The 7-year survival percentage was 30.02% for the Akreos MICS (95% CI :23-36) ; 25.70% for the CT Asphina (95% CI :18-33) ; 66.57% for the MicroSlim (95% CI :60-71) ; 48.80% for the Micro AY (95% CI:45-52). At 7 years the survival rate is lower for the CT Asphina in comparison of 3 others groups p<0.001. The survival rate for MicroSlim is higher than 3 others groups p<0.001.

Conclusions:

The CT Asphina plate haptic design with square edge on periphery shows a low Nd: Yag rate at 3 years but increases dramatically after, with a tendency to have a higher rate at 7 years. MicroSlim gives the best Nd:Yag survival rate due to turning operation. The INCISE with is sharper barrier edge could give a lower PCO rate in the future but some instability will be shown. Furthermore the hydrophobic material of Micropure seems to give good preliminary results. Impacts of the IOL design will be discuss.

Financial Disclosure:

receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented