IPA: /ɒpˈtɛmɪstrɪst/
KK: /ɑpˈtɛmɪstrɪst/
A professional who examines eyes to find vision problems, diagnoses issues, and prescribes glasses or other treatments.
I need to see an optometrist for my eye exam.
Optometrist → It is formed from "opto-" (from Greek "optos", meaning seen or visible) and "metrist" (from Greek "metron", meaning measure). An optometrist is a professional who measures vision and eye health.
Think of someone who 'measures' ('metron') what you can 'see' ('opto-') — that's why an optometrist is someone who assesses your vision.