Objective: To observe Observe the functions of Qi-replenishing Vision-improving Pill on reactive vessel substances of retinal ischemia rabbits.Compare the functions with those of Middle-jiao strenthening Qi-benefiting Pill.To test the models with indexes of No、ET、ET/NO.Results:No obvious discrepancy is found between the blankgroup and Qi-replenishing Vision-improviny Pill group;great difference exists in the.value of NO、ET、ET/NO among.Qi-replenishing vision-improviny group,the model group and Middile-jiao sfrenthening Qi-replenishing vision...