Bifocal contact lenses

As we get older we notice that our sight is no longer what it once was. This natural change is known as ageing sight degradation or presbyopia and affects all of us sooner or later.

Aging sight degradation is caused by the muscles in the eye gradually weakening and the focusing lenses in the eyes also known as crystal lenses become staler and less elastic. This can be corrected with the help of spectacles, multi-focal (bifocal / trifocal) or progressive contact lenses. These lenses help us to readjust our eyes so that we can see adequately across a greater distance.

There are three ways of re-configuring aging sight degradation with the help of contact lenses. These are multi-focal lenses, progressive lenses, or with something called mono-vision.

In terms of functionality, bifocal contacts recall their predecessor, the ordinary spectacles.

These lenses possess a considerable advantage for the user who can see more clearly at a distance, with the added aspect being that it enhances the ability to read.

For enhanced sight at an "in between" distance there are tri-focal lenses, which despite the aforementioned areas possess their own properties for this "in between" purpose.