Cataract is "a clouding" on the lens of the eye due to the changes in proteins which make up the lens of the eye. Cataract disease restricts the light flow to the retina and limits the vision of the patient. Most cases are age-related but some of them may be originated from the other diseases of the eye.
The only solution is the surgery. It involves removing the cloudy lens to restore the clarity of the optical axis and to replace it with and intraocular implant. The converging lens, locates inside the eye, is fragmented and then sucked through a special ultrasound device. An intraocular artificial lens is inserted into the eye. Cataract operations are usually performed without requiring any hospitalization time. Recovery is rapid; patients can return to their daily lives after a few days.
In the past one or two years, cataract surgery has been improved with usage of some techniques which make surgeries safer and cost conscious.