Eyeglasses come in a variety of types. This includes a single-vision lens with one power or strength over the entire lens, or a bifocal or trifocal lens with multiple strengths over the entire lens.

Many adults find once they reach the age of 40 or so that they start to develop what is known as presbyopia. This is when objects that are close to the eyes become less distinct and the eyes need help ...

ATLANTA--(BUSINESS WIRE)--US-based medical device company and inventor of the NaturalVue® (etafilcon A) Multifocal 1 Day Contact Lenses, Visioneering Technologies, Inc (ASX: VTI) (‘VTI’ or ‘The ...

Multifocal lenses use multiple refractive zones built in rings to give patients distance and near vision. These lenses are designed to address the problem of presbyopia, in which people over the age ...