A cataract is a disease of the eye that occurs because the lens becomes cloudy. With diabetes, the risk of cataracts increases significantly. If you really want to understand what a cataract is, then you can read how the human eye works.
The eye lens cells, like brain tissue, absorb glucose from the blood without the help of insulin. If there is too much sugar in the blood, the lens may become cloudy, and a cataract arises. Her first symptoms are: haze before eyes, clearness of vision decreases, it becomes difficult to distinguish printed text.
Cataracts are treated with eye drops, as well as surgical removal of the lens and replacing it with an artificial intraocular lens. But the most important thing is to ensure that the blood sugar drops, and then maintain it normal.