Re: Parsa et al.: Nonarteritic anterior ischemic optic neuropathy (NAION): a misnomer. Rearranging pieces of a puzzle to reveal a nonischemic papillopathy caused by vitreous separation (Ophthalmology 2015;122:439-42)

We read with relish the editorial of Parsa and Hoyt arguing for a change in prism through which we see what we had heretofore called nonarteritic anterior ischemic optic neuropathy (NAION).1 Their elegant and cogent summary of consequences and associations of vitreopapillary traction, when collated as they have done, convincingly argue their point. As the English horn is neither English nor a horn, so too, NAION is not ischemic, at least, not primarily so.