Under the synchronous action of the elastically extruding mechanisms, the floating board is pushed upwards at constant force to ensure homogeneous infusion pressure and fluid exhaustion.

Objective To evaluate the causes and treatment of Descemet s membrane detachment when extracapsular cataract extraction and IOL implantation were performed.

The result show that the intraoperative complications are post-capsule opacity, inis posterior synechiae, prolapse of vitreous and Descemet's layer detachment;