[Phacoemulsification with Advan-Tec system and Neosonix handpiece].

PURPOSE: The comparative analyses of the standard Legacy 20000 efficiency and the AdvanTec Legacy efficiency take into consideration the effective phacoemulsification time, power, and the postoperative clinical outcomes. MATERIAL AND METHODS: Retrospective clinical study which comprises 2 groups of patients operated on with phacoemulsification: 200 eyes were operated on using the classic handpiece of the Legacy 20000 system; 200 eyes were operated on using the AdvanTec Legacy system and the NeoSoniX handpiece. RESULTS: The effective phacoemulsification time in the standard Legacy group was under 0.4 min in 40 cases (20%), between 0.4-1.2 min in 120 cases (60%), and more than 1.2 min in 40 cases (20%). The effective phaco time in the AdvanTec-NeoSoniX group was under 0.4 min in 118 cases (59%), between 0.4-1.2 min in 72 cases (36%) and more than 1.2 min in 10 cases (5%). The mean phacoemulsification power varied between 19-38% in the first group and 14-22% in the second group. Descemetic striae and corneal edema on the first postoperative day were observed in 38 eyes (19%) in the Legacy standard group, and 18 eyes (9%) in the AvanTec-NeoSonix group. CONCLUSIONS: The progression from the standard Legacy to the AdvanTec Legacy system with NeoSoniX handpiece led to the reduction in phacoemulsification power by two mechanisms, oscillation, which breaks the nucleus, and vacuum, which removes and evacuates the nuclear material.