Differences in Energy Expenditure for Traditional Cataract Surgery Using 2 Phacoemulsification Systems
Purpose
To compare intraoperative data for traditional cataract surgery between 2 phacoemulsification platforms.
Methods
Prospective study including 376 eyes that received traditional cataract extraction surgery by two surgeons. The study was performed at Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL. Eyes were divided in 2 groups: in Group 1, surgery was performed using the Infiniti Vision System (Alcon); in Group 2 surgery was performed using the Centurion Vision System (Alcon). Cataract grade, amount of fluid used, and cumulative dissipated energy (CDE) was recorded for each patient.
Results
Group 1 included 299 eyes and Group 2 included 77 eyes. Mean CDE for group 1 was 10.46 and for group 2 CDE was 8.56; these values were not statistically significant (p=0.097). Data was then separated into different cataracts grades (1-4). Grade 1 mean CDE group 1=3.69 (n=28), group 2=1.92 (n=2) P=0.58. Grade 2 mean CDE group 1=7.58 (n=191), group 2=4.74 (n=42) P<0.0001. Grade 3 mean CDE group 1=16.86 (n=68), group 2=12.9 (n=30) P=0.047. Grade 4 mean CDE group 1=35.77 (n=12), group 2=22.14 (n=3) P=0.202.
Conclusion
Mean CDE values for traditional cataract surgery is significantly reduced using the Centurion as compared to the Infiniti phacoemulsification systems for cataract grades 2 and 3. For cataracts graded 1 and 4 there was a trend towards lower energy expenditure, however the numbers were insufficient to demonstrate significance at the time of this analysis.