Capsulotomy diameter mark.

Recent improvements in intraocular lens (IOL) design and material delay posterior capsule opacification (PCO) after cataract surgery. However, studies have shown that without anterior capsule coverage of the IOL, PCO rates tend to increase. Surgeons have traditionally sized anterior capsulotomies without using a reference. The capsulotomy diameter mark is a convenient and inexpensive method to more consistently perform an anterior capsulorhexis that will allow anterior capsule overlap of the IOL optic.