Green tea is made from the leaves of Camellia sinensis that have undergone minimal oxidation during processing. Numerous studies have been claimed that people can benefit from drinking green tea. Green tea contains a variety of amino acids, carbohydrates, lipids, polyphenols, carotenoids, vitamins, caffeine and related compounds, phytochemical and dietary minerals. Actually, green tea does rarely harmful to eye vision. On the contrary, green tea can brighten eyes. Blurry vision is commonly due to glaucoma, presbyopia, eye infection, inflammation, or injury. So take easy when drink green tea. Plus, you must pay attention to your vision problem. The best thing you can do is to see a doctor and take a thorough eye exam.