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As the result if aging process, the eye lenses tend to loose its flexibility and also the surrounding muscles that aids in maintaining the shape of the lens gets feeble which leads to farsightedness medically termed as presbyopia. Apart from aging, the condition presbyopia arises due to various other aspects such as eye injury, diseases like diabetes or multiple sclerosis, drug use, gender (women are affected at a very early age when compared to men), and occupation (people who involve in long time close view jobs like computer operators, welding workers, etc suffer from presbyopia). This condition cannot be prevented as it occurs naturally due to old age and the only thing we could do is to reduce the severity of presbyopia from affecting us. If we are able to read the books or other reading materials only by holding them at a distance apart from us then we can discover that we have the symptom of presbyopia and require bifocal vision correction. Suitable contact lenses are available to facilitate bifocal users that can be adopted after getting prescription from eye doctors, as they can tell whether the contact lenses will be a perfect choice for us.

There are wide ranges of bifocal contact lenses that are made of different materials, from rigid gas permeable (RPG) lenses, traditional soft contact lenses, the new silicon hydrogel soft contact lenses that permit more of oxygen supply to the eyes. These lenses also possess different wear schedules among which RGP lenses can be extended for several years, some may be last for one or two weeks and few are daily disposables.

The focus of the far and near corrections in bifocal contact lenses differs in their designing. One among is aspheric contact lenses which possess the closer and distance corrections are combined across the lens, and the eye can choose the point of focus it requires without our knowledge. In another type named concentric, which is designed like concentric rings and they have either one of the vision adjustment at the centre portion of the contact lens, while the other is adjustment is made by the encircled portion that is outside the lens. The third type is translating lenses which work similar to that of bifocal glasses as they possess one rectification at the top, and the other in the bottom of the lens. All these types are used for more than one rectification of vision so they can be termed as multifocal contact lenses. Some people having presbyopia the point of focus varies for each eye, in this case they need monovision lenses to correct nearsightedness in one eye and farsightedness in the other. At times people may not identify this type of problems and even the lenses are also not much particular in this regard, so for those who have this mode of difficulty has no other go unless to spend more to get two different lenses for their remedy.