Cataracts as the presenting symptom of type 1 diabetes mellitus.

Type 1 diabetes mellitus (DM) usually presents in the pediatric population as weight loss, polyuria, polydipsia, and, occasionally, with abdominal pain, vomiting, and Kussmaul breathing consistent with diabetic ketoacidosis. In this case report, we describe a 17-year-old boy presenting with fatigue and bilateral blurry vision, found to have hyperglycemia and subsequent DM on a laboratory draw before cataract surgery commenced. This patient also had an added complication of pseudophakic cystic macular edema of both eyes after uncomplicated cataract removal, which has not been described in previous case reports of pediatric patients with DM.