Passive CAP-VAC: a simple and safe technique to clean the posterior capsule

Abstract

Purpose: To describe a new and less risky technique for the cleaning of posterior capsule during phacoemulsification called passive cap vac.

Method: Passive cap vac consisted in the removal of residual posterior capsule opacities using a disconnected 0.3 mm aspiration cannula. The hole of the aspiration cannula was faced toward posterior capsule and gently rubbed against it to achieve a complete cleaning of posterior capsule. The video of the technique is available online.

Result: With this new technique, the aspiration was ruled by the gravity and by the height of the balanced saline solution (BSS), in addition the Venturi's effect and the absence of active aspiration beyond the cannula avoided an excessive aspiration of posterior capsule.

Conclusion: Passive cap vac allowed to clean posterior capsule using softer forces than traditional way, minimizing the risk of capsular tear.

Keywords: Capsular cleaning; Capsular surgery; Cataract; Posterior capsule opacification.