Residual lens epithelial cells can be polished off the posterior capsule using cohesive viscoelastic from the end of the cannula. There are other instruments for this purpose including a silicone-tipped cannula. The posterior capsule is very delicate, so if it proves too adherent to remove all opacities it is better to leave the material and perform a YAG capsulotomy at a future time. Preferably this is done at least 3 months post-operatively to allow bag contraction around the intraocular lens for optimal stability. If a significantly dense posterior capsular opacity is noted pre-operatively, the patient needs to be advised that full removal of the opacity may not be able to be completely performed at the time of the surgery and the need for a post-operative laser procedure to achieve the final vision.