The final visual acuities and prognostic factors predictive of these results were analysed in 69eyed of the eyes had improved or no changed visual acuities of final examination. Preoperative or postoperative factors associated with a favorable visual prognosis included the following :1) Preoperative visual acuity of 5/200 or better, 2) Retaining the crystaline lens, 3) Abscence of need to input silicone oil