optometry
UK[ɒpˈtɒm.ɪ.tri]US[ɑːpˈtɑː.mə.tri]
n
The profession of examining the eyes to measure vision and prescribe corrective lenses.
n
The practice or art of testing eyes for visual acuity and prescribing glasses.
Morpheme Breakdown
opto
metry
opto
sight
metry
measurement
Etymology
The word 'optometry' is a modern scientific compound built directly from Greek roots. The first element, 'opto-', originates from the Greek 'optos', meaning "seen" or "visible", itself derived from the verb 'opsis' (sight). The second element, '-metry', comes from the Greek '-metria', meaning "measurement", related to 'metron' (a measure). Literally, the term translates to "the measurement of sight". This transparent construction reflects the field's primary function when it emerged in the late 19th century: the objective assessment of visual acuity and the prescription of corrective lenses, distinguishing it from the medical treatment of eye diseases.
Analysis
Structure: opto (sight) + metry (measurement)
- opto: From Greek 'optos' (seen, visible). Functions as a combining form meaning "sight" or "vision".
- metry: From Greek '-metria' (measurement). Functions as a combining form meaning "the process or science of measuring".
Examples
He decided to pursue a career in optometry after his positive experience with contact lenses.
A routine optometry appointment can detect changes in your vision and overall eye health.
The college is renowned for its advanced degree program in optometry.