When your eyes feel red and irritated, then you should consider whether you get irritated eyes or not. Conjunctivitis, allergies eyes, dry eye syndrome, blepharitis and corneal ulcer are all the most common causes of irritated eyes. Black tea is possible to help people with irritated eyes. Black tea has a common name-red tea. We all have known that black tea is a type of tea that is more oxidized than oolong, green and white teas. Plain black tea without sweeteners or additives contains negligible quantities of calories, protein, sodium, and fat. A study has shown that drink a cup of black tea can help reverse an abnormal functioning of the blood vessels. People everyday need to take some flavonoids, while black tea contains seventy percent that supply to people. Of course, we can also obtain some of the flavonoids from fruits and vegetables. All these nutrition help with bright our eyes, and reduce itchy and red of eyes. Also, black tea works for blood vessels. Drinking a cup of tea is a good habit to keep balance and health.