Cataract formation refers to the development of a cloudy area in the lens of the eye. This cloudiness causes blurry vision and can make it difficult to see things clearly. Full definition
If an underlying disease that is known to cause cataracts is diagnosed (such as chronic inflammation of the anterior chamber of the eye, or anterior uveitis), effective treatment of the disease can prevent cataract formation. (petsinthecitymagazine.com)