Many people worry their cataract has “come back” after surgery, but cataracts don’t actually return. Instead, a common condition called posterior capsule opacification (PCO) can cause cloudy or blurry vision months or years later. This “secondary cataract” occurs when cells on the lens capsule become hazy—but the good news is it’s easily treatable with a quick, painless YAG laser procedure. Learn why vision can blur again after cataract surgery and how PCO is safely corrected