Bifocal contact lenses
Bifocal contact lenses facilitate vision correction for both near and far distances. These lenses are designed especially for people suffering from presbyopia. Bifocal contact lenses have two prescriptions in the same lens. Some are designed so that the middle part of the lens helps to correct near vision, while the outer part of the lenses help to improve distance vision. Others are designed with the middle part to help see things at far distances and the edges to help see things that are near.
Difference between bifocal and multifocal contact lenses.
Difference between these types of contact lenses is simple. Bifocal contact lenses have a little line that separates the near and the distance prescription into two zones. Your eye uses one zone to focus distance vision and the other to focus near objects, just as with bifocal glasses. With multifocal lenses, there is no distinct line, and the contact lenses feature multiple zones to provide a gradual transition between near and far vision.