In Hahnemann's Materia Medica Pura, British Journal of Homoeopathy , Vol. XVI, and Allen's Encyclopaedia . What is Euphrasia ? The Eyebright , tincture from the fresh plant excluding the root. Imported. What is the general action of this remedy ? Acts especially upon mucous membranes, principally of eyes and upper respiratory tract. Give its eye symptoms. Blepharitis, injected eyes, discharge thick and excoriating, the tears scald and irritate the cheeks, photophobia worse in artificial light. Traumatic conjunctivitis. Paralysis of the third nerve. How is Allium cepa distinguished ? The discharge from the eye in Euphrasia is excoriating and that from the nose is bland, while the opposite is found in Allium cepa , nose excoriating and eyes bland.