If you wear contact lenses, remove them before applying naphazoline ophthalmic. Ask your doctor if contact lenses can be reinserted after application of the medication. Naphazoline ophthalmic may contain a preservative (benzalkonium chloride), which may cause discoloration of contact lenses.
Do not use naphazoline ophthalmic more often or continuously for longer than 48 to 72 hours without consulting a doctor. Chronic use of this medication may damage the blood vessels(veins and arteries) in the eyes. Consult a doctor if your symptoms do not improve or appear to worsen.
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