the.com/optometry
the science of asking 'better or worse?' until even your eyeballs lose confidence
means The healthcare profession concerned with examining the eyes, measuring vision, and prescribing corrective lenses to help you see clearly.
from A 19th-century compound stitched from Greek: 'optos,' meaning seen or visible (the same root behind 'optic' and 'optical'), plus '-metry,' from 'metron,' a measure — also the engine inside 'geometry' and 'thermometer.' So at heart the word simply means 'the measuring of sight' — which is exactly what's happening while you squint through that giant lens contraption.
- ancient roots
- reading stones magnified text 1,000 years ago
- retina reveals
- eye exams spot diabetes and brain tumors
- snellen chart
- the big E debuted in 1862
- color test
- Ishihara dots screen out colorblind pilots
- eye uniqueness
- iris patterns rival fingerprints for identity
phoropter machine — the device with rotating lenses used in eye exams, popularized by zeiss in the early 1900s
lasik eye surgery — refractive procedure approved by fda in 1999, now performed on millions annually worldwide