![]() ![]() Most of the widely used eye drops - both prescription and over-the-counter (OTC) varieties - contain decongestants or antihistamines.ĭecongestant eye drops work by narrowing the blood vessels in the eyes. ![]() A bacterial infection, for example, may require antibiotic eye drops prescribed by a doctor.īut for treating routine causes of red eyes, the following ingredients for eye drops may be helpful. Keep in mind that some causes of red eyes may need more than whitening eye drops to clear things up. Other eye drops contain lubricants to prevent dryness and moisturize the whites of your eyes to make them feel better, and in some cases look whiter in the process. ![]() This makes the blood vessels less visible, reducing the red hue in the sclera (white part of the eyes). Some redness-relieving drops include medications that cause the blood vessels in the eyes to narrow (constrict). Whitening eye drops mainly work in one of these two ways to make your eyes whiter: ![]()
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