Acute angle-closure glaucoma caused by vitreous prolapse after neodymium:YAG posterior capsulotomy.

We report the second known case of acute angle-closure glaucoma from vitreous prolapse after neodymium:YAG (Nd:YAG) laser posterior capsulotomy in a patient with a posterior chamber intraocular lens (IOL). This is the first reported case to result in corneal decompensation that required penetrating keratoplasty. The rare complication of vitreous prolapse was unusual in this patient because of the presence of a posterior chamber IOL, a small 4.0 mm capsulotomy opening, and low (26 mJ) Nd:YAG laser energy.