From Longman Dictionary of Contemporary Englishopticianop‧ti‧cian /ɒpˈtɪʃən $ ɑːp-/ noun [countable] 1 
British EnglishMNBBT someone who tests people’s eyes and sells glasses in a shop SYN optometrist American English2 American EnglishBOMD someone who makes lenses for glasses
British EnglishMNBBT someone who tests people’s eyes and sells glasses in a shop SYN optometrist American English2 American EnglishBOMD someone who makes lenses for glassesExamples from the Corpus
optician• A police chief inspector, an optician and the general manager of Lerwick Harbour Trust were among those who saw it.• Dentist and optician fees will also rise.• Gordon Beamish was a real live optician.• Is Specsavers a chain of opticians or not?• If the physical lighting is acceptable, and the eye-strain persists, consult your medical practitioner or an ophthalmic optician.• They were still uncomfortable, so I went back into the optician.• I have got to the stage where I totally dislike them, so it is off to the opticians next week.• The optician will mark your voucher with a letter-code. 