The lens capsule is a thin, elastic bag in the eye. During the operation, the front (anterior) portion of the lens capsule is carefully opened and the cataract is removed. The IOL is inserted into the bag. But the capsule has cells at the equator which show a tendency to grow across the posterior capsule, restricting vision. It is called Posterior Capsule Opacification (sometimes referred to as Secondary Cataract or “after cataract”).
Studies on the original monofocal AcrySof lenses have demonstrated a high level of material biocompatibility within the eye. In addition, these studies have shown significantly less lens epithelial cell proliferation, which reduces the occurrence of anterior and posterior capsular opacification, thus the need for YAG capsulotomies. AcrySof lenses also have lowest Nd: YAG rates in comparison with PMMA and silicone lenses.