Description:As the name implies, this herb is used historically to treat many eye conditions because its flower looks like an eye. Its traditional use has been as an external eyewash for conjunctivitis, sore eyes, tired eyes and poor vision. Internally, eyebright is an decongestant and mild astringent or tonic. It has affinity for the liver, which Chinese medicine believes is connected to eye function. The herb also aids respiratory congestion, sinus problems and allergies.