Contact lenses for presbyopia are specialised lenses designed for people with age-related long-sightedness. Presbyopia is a natural age-related process in which the eye’s lens becomes less flexible, usually from the age of 40 onwards. This makes it more difficult to see clearly up close, for example when reading, working on a computer or looking at your mobile phone.
There are two main types of contact lenses for presbyopia:
- Multifocal contact lenses: These lenses contain multiple zones of power within a single lens, similar to varifocal glasses. They are designed so that you look through different zones to see at different distances. There are various designs, such as concentric rings or a gradual transition from one power to another.
- Monovision: With this approach, you wear a lens for distance vision in one eye and a lens for near vision in the other. Your brain learns to automatically use the correct eye for the distance you are looking at. Some people opt for a modified version, known as modified monovision, in which one eye wears a multifocal lens.
Both types are available as soft lenses and as rigid lenses. Soft multifocal lenses are the most common and are available as daily disposable, fortnightly and monthly lenses. Rigid multifocal lenses are often worn at night as part of orthokeratology or during the day for specific eye shapes.
It may take a while to get used to multifocal lenses. At first, your vision may feel less sharp than with glasses, particularly in low light or in the evening. Not everyone adapts equally easily; some people need more time or may ultimately opt for monovision or a combination with reading glasses.