varifocal
adjective/ˈveərɪfəʊkl/
/ˈverɪfəʊkl/
[only before noun]- varifocal glasses have lenses which vary in how thick they are from the upper part to the lower part. The upper part is for looking at things at a distance, and the lower part is for looking at things that are close to you.
- varifocal lenses
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varifocal