What are topical decongestants?
Some eye drops contain topical decongestants that constrict small blood vessels and help reduce eye redness. These eye drops are available without a prescription. If you use eye drops with topical decongestants, be careful not to use them for prolonged periods. Overuse of topical decongestants can lead to increased swelling and redness that can last even after you stop using the drops. This is known as a rebound effect. Topical decongestants, or any kind of eye drop containing chemicals that narrow blood vessels (called vasoconstrictors), shouldn t be used if you have glaucoma. Glaucoma is damage to the eye that results from increased pressure in the eyeball. Vasoconstrictors can worsen this condition.
