See Also: bifocal lens(medicine)
bifocal(medicine)
bifocal(dictionary)
bifocal spectacles(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
Eye lens(medicine)
Lens(health)
lens, eye(medicine)

bifocal lens (medicine)


bifocal lens


A lens used in cases of presbyopia, in which one portion is suited for distant vision, the other for reading and close work in general; the reading addition may be cemented to the lens, fused to the front surface, or ground in one-piece form; other bifocal lens's are the flat-top Franklin type, or blended invisible.