We conducted an experiment is how to use the right eye drops. First, we turn to material, understand the sold eye drops and the types of applicable people. Then, we designed questionnaire, of all people of all ages had a sampling survey. And we also through the Internet to a network survey. Next, we had about eye drops experiment. Experiment mainly divided into three categories: the eye drops acid and alkaline, eye drops of toxic, eye drops of preservatives composition. Although we in trials suffered many difficulties, but we are all overcome these difficulties. Finally, we visited the related medical experts, summarizes the method of how to use the right eye drops. Unfortunately for technical constraints, we can't measure the specific components. Preservative Hope in this activity With foreign experts to discuss, solve the problem
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