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Purpose: To study the prevention and treatment of the membrane formation on the lens surface after extracapsular cataract extraction (ECCE) with posterior chamber intraocular lens (PCIOL) implantation.Methods: We reviewed the records of 312 cataractous patients that had undergone ECCE with PCIOL implantation between 1989 and 1993. Postoperatively all pa-tients were examined under slit-lamp microscopy. The membrane formation on the surface of PCIOL in pupilar area was divided into four grades. Two membranes of surgical removal were observed under a transmission electron microscopy. One PCIOL of surgical removal was observed under a scanning electron microscopy.Results: Of 312 patients, 21 had the membrane formation on the surface of the PCIOL postoperatively. The incidence of the membrane formation was 6. 7%. Comparisons with cases of senile cataract showed the incidence to be significantly the highest among; 1. patients who had traumatic cataract (P<0. 05); 2. patients with complicated cataract (P<0. 05
Purpose: To study the prevention and treatment of the membrane formation on the lens surface after extracapsular cataract extraction (ECCE) with posterior chamber intraocular lens (PCIOL) implantation. Methods: We reviewed the records of 312 cataractous patients that had undergone ECCE with PCIOL implantation Between 1989 and 1993. The membranes formation on the surface of PCIOL in pupilar area was divided into four grades. Two membranes of surgical removal were observed under a transmission electron microscopy. One PCIOL of surgical patients were observed under a scanning electron microscopy. Results: Of 312 patients, 21 had the membrane formation on the surface of the PCIOL postoperatively. The incidence of the membrane formation was 6.7%. Comparisons with cases of senile cataract showed the the incidence to be significantly the highest among; 1. patients who had traumatic cataract (P <0.05); 2. patients with complicated cataract (P <0. 05