1210: How did this fragment get here?

Time for a cataract quiz. You are doing a seemingly routine cataract surgery and you experience no complications and in fact, everything seemed to go quite well. At the end of the case, when you insert the IOL you notice a small lens fragment behind the posterior capsule, right in the center. How did this get here? And what are you going to do about it?

click to learn from this important cataract quiz: