Nonketotic hyperglycemia (NKH) has been associated with visual field and neurological alterations, typically reversible with glycemic control. A 54-year-old woman with hypertension and dyslipidemia presented in the emergency department with a 2-week history of headaches, left visual field photopsia and polydipsia and polyuria. Examination revealed homonymous left hemianopia, along with brief episodes of head an...