Eyebright (Euphrasia officinalis). It is believed that the plant acquired this name because of its reputation for curing eye ailments - it brought much gladness by preserving the eyesight of the sufferer. For centuries, eyebright has been depended upon as the herb of choice for various diseases of the eye. It is used with excellent results for problems relating to mucous membranes. It is most helpful in acute or chronic inflammation of the eye including, over-sensitivity to light and with stinging and weeping conditions, as well as rejuvenating eyes that feel exhausted. Eyebright works as a vaso-constrictor and is astringent to the nasal and conjunctiva mucous. It brings relief in frequent sneezing bouts and also helps with eyes that are cloudy and irritated with lacrymation (excessive tears) or watery, stringy mucus. It is known to be a stimulant to the liver and to clean the blood.