Bifocal Contact Lenses

It's one of the sad facts of life. One of the effects of aging is the gradual decline of your ability to focus on objects held at arm's length or closer. The medical term for the condition is 'presbyopia', and it tends to happen to most of us as we near middle age. If you're starting to find yourself holding the newspaper out at arm's length, or putting the book down on the table in order to see it, bifocal contact lenses may be the solution to your problem.

Types of bifocal contact lenses

Like bifocal spectacles, bifocal contact lenses combine both a prescription for nearsightedness and one for farsightedness in one lens. There are several different kinds of bifocal contact lenses that combine the separate prescriptions in different ways. All of them are soft contact lenses, designed to float on the surface of the eye, and will be customized for your prescription. Your eye care professional can help decide which type is the right one for you out of the different designs of bifocal contact lenses listed below.

Translating bifocal contact lenses

Translating bifocal contact lenses have the near and far prescriptions in distinctly separated areas, much like regular bifocal eyeglasses. This generally means that the prescription to correct your near vision is at the bottom, and far vision is at the top, but occasionally the prescriptions may be reversed. In addition, if there's a need for an "intermediate" prescription, the lenses may contain all three corrective prescriptions in three separate areas. The eye will learn to focus through the appropriate area of the lens just as people who wear bifocal spectacles learn to focus their gaze through the top of the lenses when looking at things in the distance and through the bottom when reading.

Translating lenses work very well for people with all types of near vision problems, whether they need a strong or weak prescription. However, the lens must be able to move easily on the surface of the eye. This makes it a poor choice for someone who has 'dry' eyes, or whose eyes don't produce tears readily. They also may not be a good choice for someone with large pupils, or with drooping eyelids.

Annular or concentric bifocal contact lens

There are two bifocal designs that work much better for those with small pupils, or whose need for near vision correction is relatively small. Both 'blend' the corrective prescriptions in different ways.

The 'annular' or concentric bifocal contact lens has the prescriptions arranged in a 'bulls-eye' pattern around the center of the lens, making it easy for the eye to focus through the correct lens area. As with the translating lens, your lifestyle and activities will determine the exact placement of the concentric rings. For some, the outer ring will hold the near corrective prescription and the inner the far, and in others the reverse. Also like the translating lens, annular bifocal lenses may hold a third intermediate corrective prescription between the near and far, if, for instance, you need a different prescription for frequent computer work. To make things as easy as possible on your eyes, the edges of the rings may be blended, much the way that progressive bifocal glasses are blended to ease transitions between prescriptions.

'Aspherical' lens

The second type of multi-focal contact lens is the 'aspherical' lens. The prescription areas are both placed near to the center of the eye, at or just above the pupil. In use, it is the most like 'natural' vision, where your eyes learn to ignore far objects while focusing on things that are close, and the reverse when focusing on objects that are further away.

Both of these lens styles can be made extremely thin for comfort and breathability. In addition, bifocals are becoming increasingly more available as extended wear and disposable lenses for convenience and safety.

Monovision fit and hybrid bifocal fit

Two other options that deserve consideration when you're thinking about getting bifocal contact lenses are a monovision fit and a hybrid bifocal fit. In a monovision fit, one eye is fitted with the prescription for near vision, and the other with the prescriptions for far vision. Your eyes will adjust to using the correct eye for the correct task, though it may take a while for you to get used to it. With hybrid bifocals, one eye is fitted with a bifocal contact lens and the other is fitted with a prescription for the stronger need. Like monovision, your eyes will adjust to using the eye with the proper correction for the task.

Your eye care professional can help you decide whether bifocal contact lenses are right for you, and which type is the best for your particular needs.

Where can you find cheap bifocal contact lenses?

ACUVUE BIFOCAL contact lenses is the most popular doctor-prescribed brand of bifocal contact lenses.

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