The clinical effect of two manual small incision cataract surgery on the cataract with a hard core of aged patients

Objective To compare the clinical effect of two manual small incision cataract surgery on the cataract with a hard core of aged patients.Methods A clinical case-control study.Seventy-two cases (76 eyes) with hard core cataract in the Third Affiliated Hospital of Xinxiang Medical University were selected.All the patients accepted the manual small incision cataract surgery.According to the different method of the treatment of lens,all the patients were divided into two groups.In one group,the manual nucleus fragmentation was selected in capsular bag.In the other group,the nucleus delivery of phaco was selected to deliver the nuclear completely (improved group).Then,the mean operation time,postoperative vision,intraocular pressure,the endothelium cell loss ratio and the intraoperative complication were observed and compared.Results The mean operation time,the endothelium cell loss ratio and the intraoperative complication of the group with the manual nucleus fragmentation in capsular bag were (8±2.02) min,(9.23±3.79)％ and 5.26％ (2/ 38),respectively.The values of above indexes of the improved group were (7±2.11) min,(7.11± 3.67)％ and 5.26％ (2/38),respectively.There were significant difference in the operation time between two groups (t =4.38,P=0.030),and the endothelium cell loss ratio between two groups had statistical significance (t =4.44,P =0.021).There were two intraoperative complications in every group.Conclusions The results suggest that the selection of the nucleus delivery of phaco in the manual small incision cataract surgery can completely extract the nuclear,save more operation time and protect the function of corneal epithelium and endothelial cells.So,this method is the more safe and effective one for the therapy of aged patients with very hard core cataract. Key words: Manual small incision cataract surgery (MSICS);  Hard core;  Capsular bag;  Manual nucleus fragmentation;  nucleus delivery