Cataract and Phaco Surgery
It's clouding of the crystalline lens of the eye or in its envelope. This condition can range from simple to severe (opacity of the lens). This will result in obstruction of the passage of light to the retina causing blurry image and decrease in the visual acuity.
Early in the development of age-related cataract the power of the lens may be increased, causing near-sightedness or myopia, and the gradual yellowing and opacification of the lens may reduce the perception of blue colors. Cataracts typically progress slowly to cause vision loss and are potentially blinding if untreated. The condition usually affects both the eyes, but almost always one eye is affected earlier than the other.
Age related, congenital, secondary( e.g, drug- corticosteroids), traumatic.
Anterior (cortical,polar,sub-capsular), Nuclear, Posterior(Polar, cortical).