Purpose: To analyze and compare the changes in endothelial cell density (ECD) and cumulative dissipated energy (CDE) in patients having cataract surgery with two different femtosecond laser platforms and standard phacoemulsification.
Methods: This prospective non-randomized comparative study included patients scheduled to undergo cataract extraction using femtosecond laser-assisted cataract surgery (FLACS) (60 eyes) or standard phacoemulsification (60 eyes) between September 2013 and March 2016. The main outcome measures were CDE and percentage of endothelial cell loss. Comparative analysis of CDE and percentage of endothelial cell loss between the two phacoemulsification platforms with respect to conventional and FLACS techniques was performed.
Results: The CDE and the 1-month mean percentage of endothelial cell loss was 6.11 ± 3.52 and 9.06% ± 8.77% in the standard phacoemulsification group and 4.65 ± 3.61 and 6.00% ± 8.02% in the FLACS group, respectively (P = .039). In the subgroup analysis based on cataract grading, the CDE was significantly less in the FLACS group compared to the standard phacoemulsification group in both the early and advanced cataract group (P = .002). The percent decrease in endothelial cell loss was statistically lower in the FLACS group when compared to the standard phacoemulsification group in the advanced cataract subgroup (P = .02).
Conclusions: FLACS pretreatment resulted in a decrease in CDE and less endothelial cell loss when compared to standard phacoemulsification. The decrease in endothelial cell loss was more prominent in the denser cataract group; thus, FLACS may be most beneficial in those cases. There was no significant difference in results between the two laser platforms. [J Refract Surg. 2017;33(10):708-712.].
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