During cataract surgery, the cataract is removed and a clear lens implant is inserted in its place, into the posterior capsule. This posterior capsule may develop some clouding at any point, ranging from immediately to years postoperatively. This clouding of the vision is similar to the symptoms experienced with cataracts, such as difficulty reading fine print or street signs, and glare from lights. Sometimes this is referred to as a “secondary cataract.” Fortunately, this clouding of the posterior capsule can be cleared with a simple, painless, in-office procedure called YAG laser capsulotomy. This clouding of the posterior capsule only happens once, and it is rare to need the YAG laser repeated.