The Effect of Ruboxistaurin on Visual Loss in Patients With Moderately Severe to Very Severe Nonproliferative Diabetic Retinopathy: Initial Results of the Protein Kinase C β Inhibitor Diabetic Retinopathy Study (PKC-DRS) Multicenter Randomized Clinical Trial
Diabetes July 2005 54:2188-2197; doi:10.2337/diabetes.54.7.2188