Smolyar, Albert E.Hamrah, Pedram2011-07-272011Smolyar, Albert E., and Pedram Hamrah. 2011. Bilateral posterior ischemic optic neuropathy in a patient with severe diabetic ketoacidosis. Case Reports in Ophthalmology 2(1): 91-94.1663-2699http://nrs.harvard.edu/urn-3:HUL.InstRepos:5083804Purpose: To report a case of bilateral posterior ischemic optic neuropathy (PION) in a patient with severe diabetic ketoacidosis (DKA). Design: Observational case report. Participant: A 35-year-old male who suffered bilateral visual loss during a severe episode of DKA. Methods: Neuro-ophthalmological examination, neuroimaging consisting of a CT scan and MRI of the brain and orbits, as well as a MRA of brain vessels. Results: Bilateral PION was diagnosed in a 35-year-old male with no light perception vision, who emerged from a coma caused by severe DKA. The patient developed optic nerve pallor in both eyes 4 weeks after the initial examination. Visual acuity with no light perception in both eyes remained unchanged after 6 months' follow-up. Conclusions: Severe DKA can be complicated by bilateral PION, resulting in total blindness.en-USJournal Article2011-07-2710.1159/000325141