Pars plana vitrectomy in the treatment of chronic aphakic cystoid macular edema.

Long-standing cystoid macular edema was evaluated in three groups of aphakic patients: Group A following vitrectomy, Group B without vitrectomy, and group C without vitrectomy but with associated background diabetic retinopathy. After a two-year follow-up period, no significant differences in resolution of cystoid macular edema and visual acuity were found between the three groups.