What Do you mean by cataract? A cataract forms when the natural lens of the eye becomes blurred, often due to ageing, diabetes, eye injury, specific medications, or prolonged sunlight exposure. Signs may include unclear eyesight, halos near lights, dull colours, frequent changes in spectacles, and difficulty with night driving. https://www.tumblr.com/healpedia/816498608242311168/clear-vision-starts-here-advanced-cataract-eye