multi focal contact lenses,multifocal contact lenses

Multi focal contact lenses are playing a massive role in the fight against age related poor vision. Presbyopia (eye dysfunction due to age related reasons) affects many adults after they cross the mark of 40. In this defective condition of the eyes one can hardly focus on things nearby because the lens that is existent naturally inside the eye becomes inflexible. Previously, wearing eyeglasses having bi-focal lenses was the only solution.

But now because of the arrival of the breakthrough technology of multi focal contact lenses, people are finding a new ray of hope in terms of comprehensive treatment. It is extremely easy to understand the difference between the traditional bifocal/trifocal lenses and the multi-focal variety. In the case of the former designs, there used to be distinct demarcating lines in between the various focal points. But this has been done away with in the advanced multifocal contact lenses where there is a uniform and consistent change in the lens thickness.

Previously people had to face lot of hassles because they would have to look upwards for noticing something at a distance and downwards for the near view. This was done to allow passage of light rays through the thinner section for close view and the thicker section for distant-viewing. So, one had to get accustomed to the varying focal thicknesses of the lenses initially. Afterwards once the habit had developed the movement of the eyes occurred more instinctively.

Various methods are implemented for the purpose of manufacturing multi focus contact lenses. Again the focal patterns also vary from one brand to another. For some lenses the look is similar to the patterns of the bull's eye with the model of concentric circles. Some brands use the central region for near vision, an outer ring for distant vision and another ring for close visibility.

Another category of brands uses the technique of a spherical center for close vision and the remaining portion of the lens is optimally used for far-vision. There is another variation that is also present in the structure of multi focal contact lenses. In this style, one lens is allotted for wearing on the eye that has a significant role in viewing (dominant eye) and having another lens for the other eye, which has a less important role to play in viewing ( non-dominant eye).

Because of all these variations depending upon the manufacturing brands of multifocal lenses, it is crucial that you seek the guidance of a competent and experienced eye-care specialist/optician. The professional will customize the fitting according to the pattern of focal points that are utilized for optimum viewing.

After all these have been done, ensure that you are placing the lens correctly on the appropriate eyes. One might be surprised to know that for normal eyes too, there exist variations in length thicknesses as well as dimensions. In the case of people suffering from Presbyopia these variations get impeded and that is the reason why testing is performed for finding out the dominant and non-dominant eyes. Correspondingly, each lens of multi focal contact lenses would be positioned.

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