|  | 
Definition of NAION
1. Initialism. (context: ophthalmology) Non-arteritic AION, Non-arteritic anterior ischaemic optic neuropathy (''UK''), non-arteritic anterior ischemic optic neuropathy (''US''). ¹
¹ Source: wiktionary.com
|  | 
1. Initialism. (context: ophthalmology) Non-arteritic AION, Non-arteritic anterior ischaemic optic neuropathy (''UK''), non-arteritic anterior ischemic optic neuropathy (''US''). ¹
¹ Source: wiktionary.com