Pars plana lensectomy for subluxated and dislocated lenses.

Pars plana lensectomy by ultrasonic fragmentation appears to be the treatment of choice for extraction of subluxated and dislocated lenses. The closed system technique allowed extraction of 11/11 subluxated lenses without operative or postoperative complications with an average observation period of 4.5 years. The technique was employed in four traumatically dislocated lenses in eyes with accompanying traumatic pathology requiring additional surgical procedures, i.e., cryoretinopexy and scleral buckling. There were no complications in 4/4 eyes with an average observation period of 1.5 years. Pars plana lensectomy avoids many of the complications of the open-sky limbal approach i.e. anterior synechiae, vitreous incarceration, wound dehiscence, aphakic or pupillary block glaucoma, bullous keratopathy, epithelial ingrowth, stromal ingrowth or outgrowth and surgically induced astigmatism.