A standardized survey was created for adult participants with diabetes mellitus to investigate their knowledge of personal and recommended ABCs of diabetes care. The recommended levels were as follows based on the recommendations from the American Diabetes Association and national expert committees and panels: HbA1c, less than 7.0%; blood pressure, lower than 130/80 mm Hg; and LDL-C levels, less than 100 mg/dL (to convert to millimoles per liter, multiply by 0.0259).4- 6 The study was conducted between May 13, 2009, and July 22, 2009, at the Penn State Hershey Ophthalmology outpatient clinic. All patients who were aged 18 years or older, had a diagnosis of type 1 or type 2 diabetes mellitus, and were seen at the ophthalmology clinic were eligible for inclusion in the study. Exclusion criteria included being younger than 18 years, not having a diagnosis of diabetes mellitus, and having mental impairment. Surveys were completed verbally by the same investigator (C.D.) to ensure consistency and include persons with visual impairment.