Abstract

SA.22.06

Coaxial micro-incision cataract surgery (C-MICS) using the MICS-platform

Christopher Wirbelauer, Nadja Müller, Heike Häberle, Duy-Thoai Pham
Klinik für Augenheilkunde, Vivantes Klinikum Neukölln, Berlin

Background
The reduction of the incision size to 1,8 mm is a current development in cataract surgery. In this clinical study the surgical experiences with coaxial micro-incision cataract surgery (C-MICS) using the MICS-platform were compared.
Methods
90 patients with senile cataract were operated with C-MICS. For phacoemulsification specific handpieces and parameters of the MICS-platform for 1,8 mm or 2,2 mm corneal incisions were used (Stellaris, Bausch&Lomb). For 1,8 mm incisions a MICS-IOL (Akreos MI-60, Bausch & Lomb) and for 2,2 mm incisions a conventional one-piece IOL (Tecnis ZCB00, AMO) was implanted. Two months postoperatively the IOL position, visual acuity, induced astigmatism, contrast sensitivity under mesopic conditions (FACT) and ocular aberrations (Hartmann-Shack sensor) were assessed.
Results
All surgeries were without complications. The tip-time was 2,18±0,66 and 2,34±0,90 minutes (P=0,603) and the effective phacoemulsification time 3,35±1,60 and 3,65±1,59 seconds (P=0,374). Patients in the 1,8 mm group had more stable anterior chambers (P<0,001) and on average 23 ml reduced irrigation volumes (P<0,001). Best-corrected visual acuity was 0,96±0,19 (MI-60) and 1,05±0,22 (ZCB00) (P=0,081). Higher-order aberrations were significantly smaller after implantation of the Tecnis-IOL (0,32±0,09 µm vs. 0,25±0,08 µm; P=0,001). However, in contrast sensitivity testing there were no significant differences (P>0,05).
Conclusions
With modern phacoemulsification equipment C-MICS has achieved a high level of effectiveness. With a 1,8 mm incision C-MICS was comparable or better than with a 2,2,mm incision. Despite higher vacuum levels the anterior chamber was more stable and the irrigation volumes during surgery reduced. Although the higher-order aberrations were slightly increased, the implanted MICS-IOL had good optical qualities compared to the control IOL in the early postoperative period.

Copyright: 2009 Porstmann Kongresse GmbH. All rights reserved. Impressum, Disclaimer.