Objective To explore the possible mechanism of Yiqi Mingmu Pills (益气明目丸) in treatment of retinitis pigmentosa (RP) . Methods A total of 24 RCS rats were randomly divided into blank group,model group and Yiqi Mingmu Pills group,with 8 rats in each group. The blank group RCS rats (rdy +/+ ,p +/+) ,and the model group RCS rats (rdy -/,p -/-) were given 12 ml/(kg·d) of normal saline by gavage. The Yiqi Mingmu Pills group RCS rats (rdy -/,p -/-) were given 7. 8 g/(kg·d) of suspension turbid solution of Yiqi Mingmu Pills. After intragastric ad...