/ ɒpˈtɪʃn; NAmE ɑːp-/ noun
1.
(also ophˌthalmic opˈtician ) (both BrE ) (also op·tom·etrist NAmE , BrE ) a person whose job is to examine people's eyes and to recommend and sell glasses
2.
op·ti·cian's ( pl. op·ti·cians ) the shop / store where an optician works :
to go to the optician's
3.
a person who makes lenses , glasses, etc.
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WORD ORIGIN
late 17th cent.: from French opticien , from medieval Latin optica optics.