The medical specialists and researchers have declared the green tea as beneficial for teeth and eyes. According to a research, drinking a cup of green tea once removes all the dental troubles. In another research, it has been proven that the green tea is quite effective for the eye condition Glaucoma. Professor Alfred Muraib of Columbia University has researched on the effects of green tea for dentals problems and he has mentioned that this tea should be taken without adding sugar in order for it to remove the harmful bacteria in the teeth. The similar results have also been produced by another research, which proves that the green tea removes the dangerous chemicals from the body, which can cause cataract and other eye related problems. He has also done research on Vitamin C, Vitamin E and other food supplements in comparison with the green tea and they have found out that the green tea is more effective as compared to other similar items.