noun, noun which may take the genitive case particle 'no'
ophthalmology; eye clinic
Refers to the medical specialty or the department/clinic itself. Often used with の to modify another noun.
眼科で目の検査を受けた。
I had an eye exam at the ophthalmology department.
彼は眼科医になるために勉強している。
He is studying to become an ophthalmologist.