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Cataracts are a leading cause of blindness. It is an opacification or clouding of the lens of the eye, the structure directly behind the pupil through which all light must pass on its way to the retina, the organ that facilitates vision. Cataracts are most commonly "caused" by advancing age (i.e., it happens to everyone who lives long enough), but may be caused or exacerbated by other factors like diabetes, certain drugs (steroids, Thorazine, et al.), and certain other, often rare disease states (e.g., galactosemia, hypoparathyroidism, Wilson’s disease, certain inflammatory conditions of the eye).
Medical treatment is usually surgical lens replacement.
As always, a tiny sliver of prevention is worth more than all the medical treatment in the world.
Nutritional factors: Deficiencies of vitamin B2 (riboflavin), vitamin C, vitamin E, and the minerals selenium and zinc have all been implicated in the premature formation of cataracts. Adequate, even higher-than-normal intake of these nutrients is recommended for anyone suffering from or at risk of developing this potentially crippling disorder. Note that all are present in appropriate quantities in the BioSlim Formulas. (Note also that the herb bilberry and the nutrient lutein are reportedly protective of good eye health as well.)