Definition of amblyopia in English:



  • [mass noun] Impaired or dim vision without obvious defect or change in the eye.

    • ‘Despite problems with follow-up, this study provides evidence that early detection and intervention for amblyopia improves vision in young children.’
    • ‘Early detection of amblyopia is critical to your child's eyesight.’
    • ‘They asked the surgeons to inform them of people with amblyopia who had lost vision in their good eye as adults.’
    • ‘Treatment improved the vision of many of the 507 older children with amblyopia studied at 49 eye centers.’
    • ‘This is very important, because it is estimated that as many as three percent of children in the U.S. have some degree of vision impairment due to amblyopia.’


Early 18th century: from Greek ambluōpia short-sightedness, from ambluōpos (adjective), from amblus dull + ōps, ōp- eye.