From Longman Dictionary of Contemporary Englishoptometristop‧tom‧e‧trist /ɒpˈtɒmɪtrɪst $ ɑːpˈtɑː-/ noun [countable] American English 
MNBBTsomeone who tests people’s eyes and orders glasses for them SYN optician British English
MNBBTsomeone who tests people’s eyes and orders glasses for them SYN optician British EnglishExamples from the Corpus
optometrist• Leif Johnson was an optometrist when he began his own distribution business.• Eleven optometrists working in 15 different locations were visited and interviewed with a structured questionnaire.• Ilium is a particularly good city for optometrists because the General Forge and Foundry Company is there.• Many optometrists are worried by this and feel there should be a routine in-depth eye test much earlier.• An ophthalmic optician or optometrist tests for and prescribes glasses and can diagnose eye conditions, but doesn't treat eye diseases.• He had five other optometrists working for hi in the shopping plaza location, and netted over sixty thousand dollars a year.• He was hacking with three other optometrists.• The views of participating optometrists were also sought.Origin optometrist (1800-1900) optometer “eye-testing instrument” ((18-21 centuries)), from Greek optos ( → OPTIC) + English -meter 