Bifocal contact lenses have been around for some time now, and in the early days the results weren’t very promising. This article will help to bring you up to date on some of the newer technologies available.
How do they work?
Most bifocal (also called multifocal) contact lenses work by creating a lens that has both the reading portion and the distance portion in the center of the lens. If the lenses are centered properly, the patient ends up seeing through both portions of the lens at the same time. This is call ‘simultaneous vision’ and has become the standard design for almost all bifocal contact lenses.
What’s the vision like through these lenses?
The lenses will take some adjusting. Simultaneous vision requires the brain to adapt to this new way of seeing. At first, many patients will experience some night glare and perhaps a shadowing of the letters when then read. In most cases, these symptoms clear up in a week or two. If they persist, it may be necessary to redesign the fit of the lenses to clear up the vision.
How do these lenses work for my computer?
Actually, most bifocal contact lens designs work very well for computer users. Computers typically sit a little further away than where one would hold printed material. The bifocal lenses usually offer very good vision at the typical computer distance.
What are these contact lenses made of?
Bifocal contact lenses come in many materials including:
- Soft lens material – these lenses are designed to last 6 months to a year.
- Soft disposable materials – these lenses are replace monthly in most cases
- Rigid Gas Permeable (RGP’s) – they are designed to last 6 months to a year, or even longer for some patients.
The next time you see your eye doctor, why not ask if you are a candidate for the new generation of bifocal contact lenses? Enjoy vision free from eyeglasses.