dioptometer[dī′äp täm′ət ər]
dioptometer definition by Webster's New World
an instrument for testing the refraction of the eye
Origin: di- plush optometer
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- dioptometry noun
dioptometer definition by American Heritage Dictionary
An instrument used for measuring ocular refraction.
Origin: di(a)- + opt(ic) + -meter.
- diˌop·tomˈe·try noun