Comparison of Femtosecond Laser Capsulotomy and Manual Continuous Curvilinear Digital-Image-Guided Capsulorhexis

Friday, April 25, 2014
KIOSKS (Boston Convention and Exhibition Center)
Wilson T. Hida, MD, Hospital Oftalmologico de Brasilia, Sao Paulo - SP, Sao Paulo, Brazil
Mario Augusto Pereira Dias Chaves, MD, Hospital Oftalmológico de Brasilia, Brasilia, Brazil
Fernando De Bortoli Nogueira, MD, Hospital Oftalmologico de Brasilia, Brasilia, Brazil
Patrick F. Tzelikis, MD, Federal University of Minas Gerais, Brasília, Brazil
Celso T. Nakano, MD, Santa Cruz Eye Institute, Sao Paulo, Brazil
Antonio F. P. Motta, MD, Sao Paulo University, Salvador, Brazil
Monike de Paula Gomes Vieira, MD, Hospital de Oftalmologico de Brasilia, Brasilia, Brazil
Daniel C. Scarabottolo, MD, Hospital Oftalmologico de Brasilia, Brasilia, Brazil
André Gustavo Rolim de Araújo, MD, Hospital Oftalmologico de Brasilia, Brasilia, Brazil

Narrative Responses:

Purpose
To measure and compare size, shape and positioning parameters of femtosecond laser capsulotomy with manually continuous curvilinear digital guided capsulorrhexis (CCC).

Methods
The study was demonstrated with the LenSx femtosecond capsulotomies (Alcon) and CCC digital guided were carried out in 40 eyes of 40 patients, respectively. The CCC was performed with the Callisto Eye digital image system (Zeiss) and capsulorhexis descentration, circularity, vertical and horizontal diameters of capsulotomies, and capsule overlap were measured with Adobe Photoshop (Adobe Systems Inc).

Results
Highly accurate and predictable capsulotomy diameter, centration, size and shape was achieved femtosecond laser capsulotomy compared with capsulorhexis and showed no statistical difference between group.  Femtosecond laser performed anterior capsulotomy with programed circularity had intended diameter with standard deviation and average value, indicating higher reproducibility of the outcomes. Centration, size and shape of the anterior capsular opening influence this effective lens position and clinical outcomes.

Conclusion
Capsulorexis performed by an experienced surgeon, with good technology and appropriate settings provide similar results. But More precise capsulotomy sizing and centering can be achieved with femtosecond laser. Our results suggest that different techniques are equally effective.