AIM:To investigate the clinical effect of Ranibizumab combined with laser for diabetic macular edema and the effect on visual acuity. METHODS:Totally 80 patients(138 eyes) with diabetic edema who were treated in our hospital from January2015 to December 2015 were selected,and 40 patients were randomly divided into the combined group(67 eyes in 40 patients,treated by ranibizumab and laser therapy),the control group(71 eyes in 40 cases,laser treatment only).We compared the treatment effect of the two groups a...