A cataract occurs when the natural lens of the eye goes cloudy. The treatment is surgical removal of the lens to achieve a clear light-path to the retina. The natural lens (cataract) is replaced during the operation with an artificial replacement lens implant. Depending on the patient’s preference and suitability there is a choice of lens implants. There are three main types of lens implant, single focus, toric to correct astigmatism and multifocal to try and achieve spectacle independence. With single focus lenses and toric lenses the patient can choose if they would prefer spectacle free distance or near vision. Some patients are suitable for mono-vision using one eye for distance and one eye for near. What is most suitable for you would be discussed at your assessment.