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Definitions for
"snellen"
Keywords:
accuity
,
ophthalmologist
,
chart
,
dutch
,
acuity
Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1834-1908)
wordnet.princeton.edu
a system for measuring the accuity of focusing using eye charts. The result is expressed as a fraction eg 20/20
trayner.co.uk