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Comparison of cumulative dissipated energy between femtosecond laser-assisted and traditional phacoemulsification cataract surgery

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Session Details

Session Title: Cataract Surgery Equipment/Instrumentation/Surgical Devices

Session Date/Time: Monday 09/10/2017 | 16:30-18:00

Paper Time: 16:53

Venue: Room 4.4

First Author: : F.Pastor Pascual SPAIN

Co Author(s): :    R. Ruiz-Mesa   A. Abengozar-Vela                 

Abstract Details


To study the parameters obtained with Centurion Vision System (Alcon, Fort Worth, Texas) using the femtosecond laser-assisted or traditional phacoemulsification for cataract extraction.


Oftalvist CIO Jerez, Jerez de la Frontera, Spain


This was a prospective study in patients undergoing cataract surgery by one single surgeon in one surgical center using a balanced 30ยบ tip. Data values from the Centurion Vision System interface at Chop1, Chop2 and Final Case were compared. The studied parameters were cumulative dissipated energy (CDE), ultrasound (U/S) total time, estimated fluid usage, total aspiration time and total case time. The CDE parameter is a specified measure for Centurion that represents the dissipated energy of the U/S tip and infusion sleeve at the incision point during the phacoemulsification. A low CDE value indicates less energy at the incision site.


The mean value of each studied parameter at the end of cataract extraction for traditional phacoemulsification and femtosecond laser-assisted cataract surgery was respectively as follows: CDE was 4.222.28 and 4.753.11; U/S total time was 19.19.2 and 20.611.3 s; Estimated fluid usage was 33.09.4 and 36.48.4 mL; Total aspiration time was 106.424.6 and 132.431.8 (p<0.01); and Total case time was 300.556.6 and 307.551.1 s. There were no statistically significant differences at Chop1 and Chop2 for any studied parameter.


Less aspiration time was used in traditional phacoemulsification however values of CDE and operative times were equivalent between both techniques. Nevertheless, femtosecond laser-assisted cataract surgery is an emerging technology that needs more studies in terms of postoperative rehabilitation and refractive outcomes.

Financial Disclosure:


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