Ionic-buffering systems are the latest class of ophthalmic preservatives to be incorporated into topical medicines and act in a similar manner to oxidizing preservatives within multidose bottles.

An assortment of different preservative formulations has been used in ophthalmic medicines and many of these preservatives have been linked to unwanted ocular surface side effects. Benzalkonium ...

Blink has a range of products to meet your eye and contact lens care needs, from drops for dry eyes to lock in moisture, to preservative-free formulas; and contact lens drops to keep your contacts ...

The Prosthetic Replacement of Ocular Surface Ecosystem was well-tolerated and appeared efficacious as a delivery system for ...

In addition, many eye drops contain preservatives to help them last longer and stave off germ contamination. Most eye drops with preservatives will have an expiration date of at least one year ...

Most medications, including eye drops, include preservatives to help keep bugs and bacteria out. As Benner notes, they're meant to protect consumers, but they may not always be the best choice.