benzalkonium chloride
This is a preservative used in many eye drops to keep the bottles from being colonized from bacteria in the environment. See BAK for more information.
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This is a preservative used in many eye drops to keep the bottles from being colonized from bacteria in the environment. See BAK for more information.
Benzalkonium is commonly referred to as “BAK” in the eye world. This preservative is extremely common in medicated eye drops (especially generic glaucoma drops).
While effective as a preservative (for keeping the eye drop bottle from being colonized by bacteria) BAK can be irritating to the cornea.