Just how do these new Bifocal Contact Lenses work?

These lenses come in two principal designs, the split lens and the blended lens, explained to you in this article

Bifocal contact lenses have a unique design that enables people with a condition known as presbyopia to see at a distance and read - rather than having to hold the item away from you to read it. In this, bifocal contact lenses work in much the same way as bifocal eyeglass work; namely they have two powers in one lens - one to correct distance vision, the other near vision.

Directly related to the reason why someone may need to wear contactlenses of this nature, bifocal contact lenses come in two principal designs. The first of these is the typical standard design of bifocal eye care that is seen with traditional eyeglasses, namely the split lens. Here the lens is divided between a top lens and a lower lens. The top lens assists the wearer with their distance vision. The lower lens is designed to assist the wearer with their near vision. The second principal design is what is known as the "blended" lens. Unlike the divided lens, with the split bifocal contact lens the lens powers are blended on to different parts of the contact lens. After a while, the wearer's eyes learn to differentiate the power for the correct distance.

However, due to the nature of the contact lens, care should be taken, as bifocal contacts may not suit the needs of all wearers, with the time taken to adjust to the lenses differing with each wearer. As such, vehicle drivers should not drive shortly after being prescribed with new bifocal contact lenses. The wearer should seek the advice of their doctor as to any other activities which they should be aware. They may need to take extra care over until such time as they become accustomed to their new bifocal contact lenses.

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