CRION was first described in 2003. The disease is rare, with only 122 cases published from 2003 to 2013. There is female predominance with 59 females (48%), 25 males (20%), and no gender designation for the rest of the 122 reported cases (32%). Age ranges from 14 to 69 years of age, and the mean age is 35.6. The disease is noted to occur worldwide and across many ethnicities, with reported cases in all continents except Africa and Australia.
Chronic relapsing inflammatory optic neuropathy
Toxic and nutritional optic neuropathy
Autoimmune optic neuropathy
Arteritic anterior ischemic optic neuropathy
Late congenital syphilitic oculopathy
Punctate inner choroiditis
Posterior ischemic optic neuropathy
Persistent hyperplastic primary vitreous