The Infiniti Vision System

coemulsification machines is the Infiniti Vision System (Alcon Laboratories Inc., Fort Worth, TX). The Infiniti offers three phacoemulsification options including traditional ultrasound, NeoSoniX, and AquaLase (Fig. 22.1). NeoSoniX was originally introduced as an upgrade on the Alcon Legacy and provides the capability of delivering oscillatory sonic as well as axial ultrasonic energy, separately or in combination. The oscillatory motion involves small 2.0° arc excursions at a 100-Hz frequency. The addition of oscillatory movement improves surgeon control and occlusion management by constantly repositioning material on the phacoemulsification tip. It also enhances cutting performance, allowing for lower energy production with a resultant lower risk for thermal injury and improved followability [1]. The Legacy and the Infiniti may be programmed to initiate NeoSoniX at any desired level of ultrasound energy. It appears most efficacious at 50% amplitude with a horizontal chopping technique in the AdvanTec burst mode at 50% power, 45 ml/min linear flow and 450 mmHg vacuum [1]. A 0.9-mm microflare straight ABS tip rapidly impales and holds nuclear material for chopping. During evacuation of nuclear segments, the material flows easily into the tip, with very little tendency for chatter and scatter of nuclear fragments. With refinement of parameters, a 57% reduction in average phacoemulsification power, and an 87% reduction in effective phacoemulsification time have been reported [1]. The Infiniti Vision System