Eyebright (Euphrasia officinalis) Liquid 50ml is derived from top quality crafted or organically grown herbs that are meticulously processed to maintain purity and high potency. It is an excellent supplement to help maintain the vitality of the eyes. The active substances in Eye Bright actively target the eye region. Eyebright has been mentioned as a medicinal plant since it appeared in ancient herbal literature in 1305. It is a very old and revered folk medicine for all sorts of eye troubles.