[Non arteriitic anterior ischemic optic neuropathy in optic nerve drusen--a case report].

A case report of 45 years old patient with non-arteriitic anterior ischemic optic neuropathy (NAION) associated with drusen of the optic nerve, in the literature called as drusen associated AION (DAION), accompanied by sudden central visual loss with constant outcomes is presented. In the non-arteriitic anterior ischemic syndrome with minimum of vascular factors, it is necessary to consider the finding of drusen as possible cause, because they may be deeply located, one-sided, and the optic nerve head edema may conceal the finding. The ultrasound is the most available examination method to confirm this diagnosis.