AIM:To explore the factors of low vision after blindness prevention of poor cataract patients in Zhangjiajie.METHODS:The clinical data of poor cataract patients having surgery of prevention of blindness from January 2009 to December 2010 in our hospital were collected statistically.There were 650 cases.Eight clinical observation factors:gender,age,educational level,smoking and alcohol consumption,associated diseases,nuclear hardness,intraoperative complications and postoperative complications as independent variables(X),and low vision as the dependent variable were analysed with non-conditional Logistic regression analysis to study the factors of low vision after blindness prevention in 3 days and 3 months.RESULTS:The variables were analysed by the the non-conditional Logistic regression.The age(P=0.028),injury-related diseases(P=0.002),intraoperative complications(P=0.015),postoperative complications(P=0.008) were the risk factors of low vision in 3 days’ statistics.And the age(P=0.016),injury-related diseases(P=0.001),were the risk factors of low vision in 3 months’ statistics.CONCLUSION:The age,related diseases,intraoperative complications,postoperative complications are the risk factors of low vision in the surgery of blindness prevention in early postoperative stage,and it is related to the original ocular diseases and advanced age in the long-term.