Naphazoline is a vasoconstrictor. It works by narrowing swollen blood vessels in the eyes to reduce eye redness. Zinc is a mineral that is used as an astringent to gently clear proteins and mucus from the outer surface of the eye. Naphazoline and zinc ophthalmic (for the eyes) is a combination medicine used for temporary relief of minor eye irritation such as redness, dryness, or burning. This medication is also used to clear mucus build-up on the outer surface of the eye caused by dust, pollen, or smoke. Naphazoline and zinc ophthalmic may also be used for purposes not listed in this medication guide.
Naphazoline temporarily relieves the symptoms caused by dry eyes by constricting ocular blood vessels then coating the eye, also acting as a lubricant and ophthalmic decongestant. Known as a sympathomimetic (alpha receptor agonist), Naphazoline is a vasoconstrictor that decreases congestion when applied to the mucus membrane. Some brands contain other ingredients such as glycerin or hypromellose to aid with extra protection.