Pleo Muc (Mucokehl) Eye Drops are used for relief of dry and irritated eyes, including burning, stinging and itching due to air pollutants (smog or pollen), chlorinated water or foreign materials. In Germany, these eye drops are used to address circulatory and congestive conditions of the eye, with clinical studies showing successful results in cases of conjunctivitis, cataracts, glaucoma, and dry eye syndrome. They are preservative free and safe to use with contact lenses.