Question: What is a PCO and who gets them?

Answer: A PCO is a posterior capsule opacification, an “after cataract” that can form months to years after successful cataract surgery. They form when residual lens epithelial cells migrate over the posterior capsular bag. This is treated with a Yag capsulotomy, where a laser is used to pop a whole through the center of the posterior capsule in order to clear the central visual axis.