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Bifocal Contact Lenses

Bifocal contact lenses are made to work for people with a vision impairment called presbyopia. Presbyopia is a specific condition that affects the aging eye, preventing the proper focus of things at different distances, necessitating a seeing device that has a varying degree of power i.e. two prescriptions in one lens.
Early signs of presbyopia would include print starting to blur in text and the necessity to hold newspapers, books, menus etc a little further away from the face in order to focus on them.

Bifocal contact lenses work by having two different prescriptions in the same contact lens. They work with the way the eyes works, and in much the same way as the traditional bifocal glasses used to work. Bifocal contact lenses work in two different ways:

• Alternating vision – These bifocal contact lenses work as your pupil alternates between the two powers as it shifts between up and down vision; this is exactly the same principal as bifocal glasses.

• Simultaneous vision – These bifocal lenses require the wearer to be looking through both powers at the same time and relies on the eye’s natural ability to differentiate and choose the correct power to use dependent on what is being viewed. The human eye is very versatile and soon adjusts to these bizarre sounding bifocal contact lenses.

Many people think that the neither of these is possible, and that certainly the first one seems unlikely since the bifocal contact lenses are placed directly onto the eye. In their mind, the eye moves and the contact lens sits on the eye; thus the contact lens moves too. This would negate the effects described in the alternating vision bifocal contact lenses. However, these contact lenses do not move, they remain stationary on the eye and the pupil beneath it moves up and down as required to gain the full benefit of the bifocal contact lenses.

It is imperative that you consult an expert to find out which bifocal contact lenses best suit your eyes and your individual sight impairment. It is foolish to pick something you are not sure of. Once you have a prescription and you know which bifocal contact lenses are going to better serve you, then you can utilise our online contact lens service to get the best deal on you bifocal contact lenses.