Cataract

A cataract is an opacity or cloudiness that develops in the crystalline lens of the eye and progressively blurs the vision.

Cataracts typically progress slowly to cause vision loss, myopia, a gradual yellowing and opacification of the lens that will reduce the perception of blue colours and finally are potentially blinding if untreated.

Common treatment is a surgical removal of the interior of the cloudy lens while keeping the outer lens capsule intact and to implant an intraocular lens inside.