A cataract refers to the dimming of the lens of the eye. The lens is located inside the eye behind the iris and pupil. A cataract can cause a decrease in visual acuity and/or contrast vision acuity, and also distortion of the visual image, e.g. seeing double contours. A cataract is usually caused by a metabolic disorder. It usually develops in older age, but may be also congenital or occur in younger age in association with several factors like diabetes or ocular trauma.

The only recognised and effective treatment method of cataracts is surgery. If a cataract affects your quality of life, it may be the right time to proceed with cataract surgery. Cataracts are most common eye disease today; therefore, cataract surgery is also the most frequent operation in eye surgery, with a high probability of success.