The lens inside the human eye works like a camera lens. It is located behind the pupil and its function is to focus incident lights rays onto the retina.

A cataract is a clouding of the lens itself, causing vision to become blurry and colours less intense. The problem can no longer be solved with glasses and surgery is necessary.

Cataract treatment always consists of surgery where the eye lens is replaced by an artificial lens. This operation is generally performed as day surgery under local anaesthetic.

Using the phacoemulsification method, via a small incision in the cornea an ultrasonic probe is inserted in the eye and breaks up the eye lens into small pieces that can then be suctioned out. A foldable plastic lens is then inserted in the empty lens capsule.