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To begin your search, go to the alphabetical index below and click on the first letter of the word you are searching for.

opt-, opto-

The combining form opt- or opto- means “eye, vision.”

  • The optic nerve transmits impulses from the eye to the brain.
  • Sue had her contact lens prescription filled by a local optician.
  • I see my optometrist every two years for an eye examination.