The eyes are very delicate and vulnerable to damage from both
external and internal factors which can ultimately affect eyesight.
In addition to dust and pollution from the outside environment,
eyes are also prone to internal damage caused by the production
of unstable molecules known as free radicals. Free radicals are
produced as a result of many natural processes within the body;
they may cause damage to various bodily tissues including the
eyes, if they are not balanced by antioxidants. Antioxidants,
which can be obtained from the diet, help to counteract these
damaging molecules and preserve the delicate parts of the
eye. Factors that may contribute to increased free radical
production include sun exposure, smoking, diabetes and high
blood pressure. Improving antioxidant status can promote eye
health by protecting the internal structure of the eye.