Multifocal Contact Lenses
Multifocal contact lenses, also known as varifocal contact lenses, are contact lenses made with multiple prescriptions built into a single lens. They help the wearer to focus on objects up close, at intermediate distances and further away. This convenient configuration is effective for treating presbyopia, a common age-related eye condition.
The combination of near and far correction in one lens means users don't need to take reading glasses on and off every time something at a different range is viewed.
The terms 'bifocal', 'varifocal' and 'multifocal' lenses are often used interchangeably, which can be a little confusing. While varifocal and multifocal lenses are the same, multifocal is the most commonly used term and refers to all lenses that have multiple corrective powers for a gradual transition from near to far sight.
In the sense that they provide close and distance vision, multifocal lenses are very similar to bifocal lenses, but there's a crucial difference between them. Despite multifocal being used as a catch-all term for all lenses with multiple corrective powers - which includes bifocals – there's a key difference to be aware of. Bifocal contact lenses and glasses have a clear line between near and far prescriptions, whereas multifocal contact lenses blend several powers together to cover all distances.