This system, mixed with existing tears, promotes corneal impregnation by correcting the deficiency of both the aquatic and mucous membrane layers of the lacrimal membrane. Tears Naturale II Med has surface tension and viscosity similar to normal tears. Tears Naturale II Med is a sterile ophthalmic solution with original composition. Because of the soothing and softening properties of its ingredients (Duasorb) and because of its Polyquad preservative, it is used to relieve the eyes from mild irritation of any aetiology and dry eye.