Free Papers • Capsular Management • Sunday 23rd September • 16.30 – 18.00 • Room 4

Comparison of elasticity and fracture strength of manual, femtosecond laser, and selective laser capsulotomies (SLC)

Session Date/Time: Sunday 23/09/2018 | 16:30-18:00

Paper Time: 16:42

Venue: Room A4

Mr Sheraz Daya will present results from a 60 cadaver eye study.

Results:

Capsulotomies were performed in 60 cadaver eyes of 30 donors comparing CCC, Victus Femtosecond Laser, (Bausch & Lomb, Rochester, NY) or CAPSULaser, (Excel-Lens, Los Gatos, CA). The pairwise study demonstrates that the SLC fracture strength is superior to that of CCC by a factor of 1.5-fold with SLC 280 + 30 mN vs. CCC with 180 + 35 mN. Furthermore, CCC fracture strength was superior to that of FLACS by a factor of 1.4-fold with CCC 190 + 35 mN vs. FLACS 140 + 20 mN (P < 0.001 as determined by statistical analysis utilizing the Wilcoxon matched-pairs signed-ranks test and in accordance with the CONSORT guidelines). The SLC capsule edge on SEM demonstrated a rolled over edge anteriorly and alteration of collagen.

Conclusions:

The strength of the capsulotomy edge for SLC was significantly stronger than that of CCC which in turn was greater than FLACS. The relative strengths can be explained by review of SEM of each type of capsulotomy.

 

Clinical investigation of a new laser device to assess its efficacy and safety for the creation of anterior capsulotomies in cataract patients

Session Date/Time: Sunday 23/09/2018 | 16:30-18:00

Paper Time: 16:48

Venue: Room A4

Mr Richard Packard will present results from a 125 patient study.

Results:

For the 63 eyes in the selective laser capsulotomy group, all treated eyes had 100% free-floating capsulotomies. The mean diameter,, circularity and centration precision of the resultant capsulotomies for the laser group were determined to be superior to the manual group with a statistical p-value < 0.05. In the laser group 86% within 0.1mm of 5.0mm. For the manual group, 44% within 0.1mm (p-value ≤0.0001). There were no capsulotomy or cataract surgery related serious adverse events.

Conclusions:

A specially formulated trypan blue was safe and efficacious for staining the anterior capsule and for use with this new continuous laser. The laser was safe and efficacious when used with an intraocular dye for the creation of anterior capsulotomies during cataract surgery with greater sizing and circularity accuracy than can be achieved manually.