When Fluidics Fail: The Hidden Setup Error When Adopting A Novel Phacoemulsification System

This case is intended to educate others about how a minor error in phacoemulsification machine setup can lead to a significant complication during cataract surgery, particularly when starting cases on a novel platform. It emphasizes the importance of proper phacoemulsification machine setup and appropriate fluidic settings in maintaining anterior chamber stability and ensuring safe, efficient cataract surgery. An intraoperative video and images illustrating incorrect versus correct irrigation bag setup will be presented to highlight how this complication can be prevented. This case will also review key differences between flow-based and vacuum-based phacoemulsification systems and their impact on intraoperative chamber stability.

This patient was evaluated and treated at a university-associated tertiary care center in the United States.

A 55-year-old female presented with hand-motion vision in the left eye due to a hypermature cataract requiring phacoemulsification. While trialing a novel phacoemulsification platform, we experienced repeated complete collapse of the anterior chamber whenever the phaco tip was occluded. Despite adjusting numerous parameters on the phaco machine and confirming that all irrigation and aspiration tubing was securely connected, the anterior chamber remained unstable during the case.  During cortical removal, a posterior capsule rupture occurred without vitreous loss. After manual removal of the remaining cortical material, a three-piece intraocular lens was successfully placed in the sulcus with optic capture.

Postoperatively, it was discovered that the irrigation hub had not been fully seated into the irrigation bottle, resulting in inadequate irrigation inflow that could not match increasing vacuum demands, leading to poor chamber stability. Despite this complication, the patient achieved an excellent surgical outcome. This case highlights the critical importance of proper phacoemulsification machine setup and emphasizes the role of standardized equipment checks and proper preparation in preventing avoidable complications when trialing new surgical platforms.

This case highlights how improper phacoemulsification machine setup can lead to significant intraoperative instability and preventable complications. Careful verification of irrigation connections and familiarity with new phaco platforms are essential for maintaining chamber stability and surgical safety. Standardized preoperative equipment checks may help reduce avoidable intraoperative complications and improve outcomes.