relating to a lens that is graduated to permit any length of vision between near and distant
Examples of 'varifocal' in a sentence
varifocal
Bifocal or varifocal spectacles are currently the best solution for those that require near and far vision correction.
James Bailey, Philip B. Morgan, Helen F. Gleeson, J. Cliff Jones 2018, 'Switchable Liquid Crystal Contact Lenses for the Correction of Presbyopia', Crystalshttp://www.mdpi.com/2073-4352/8/1/29. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)