Closed vitrectomy and the intraocular implant.

Closed vitrectomy was successfully performed on eyes containing intraocular lenses (IOLs) in order to remove retropseudophakic membranes, remove vitreous strands surrounding IOLs or adherent to the corneoscleral incision and iris in cases of persistent cystoid macular edema (CME), assist in the relocation of IOLs which had dislocated into the vitreous, and to relieve pseudophakic pupillary block. Closed vitrectomy was also performed to remove vitreous present in the anterior segment prior to secondary IOL implantation. Techniques and results of 33 closed vitrectomies in such instances are presented.