Cataract (Cataracta)

this eye  ailment a clouding that develops in the crystalline lens of the eye or in its envelope, varying in degree from slight to complete opacity and obstructing the passage of light. Cataracts typically progress slowly to cause vision loss and are potentially blinding if untreated.

Cataract usually appears at the age after 60 years old, but young people are also vulnerable to this illness. It is caused by the outside environmental factors (injury, IR radiation, UV, microwaves, and so on), or inside (inflammatories of the inside of the eyeball, diabetes, some medicaments). THE ONLY way of curying cataract is the operational removal of the clouded len.

~read more: http://pl.wikipedia.org/wiki/Za%C4%87ma