[Follow-up for posterior capsular opacification after extracapsular cataract extraction in 263 eyes]

263 eyes (252 patients) were followed up after extracapsular cataract extraction for posterior capsular opacifications. It was found that the incidence of this complication was higher after longer periods of follow-up, and also more frequent in younger patients. The etiology is due to migration and fibrosis of hyperplastic epithelial cells. Postoperative uveitis may be a contribution factor. Nd: YAG laser is the best means to perforate the posterior capsular opacification.