Additionally, both products provide up to 20 hours of moisture (based on a laboratory study) and all day comfort. Coroi MC, Bungau S, Tit M. PRESERVATIVES FROM THE EYE DROPS AND THE OCULAR SURFACE. Rom J Ophthalmol. 2015;59(1):2-5. Benzalkonium chloride (BAK): Works to kill a wide spectrum of bacteria and fungi, and can be used in lower concentrations combined with EDTA Both Biotrue Multi-Purpose Solution and Biotrue Hydration Plus Multi-Purpose Solution provide exceptional cleaning and disinfection, and hydrate lenses. They remove dirt and protein buildup for clean, clear lenses.

The innovative care solution is inspired by the natural alignment of the ocular properties found within the eye and can keep the beneficial proteins and fluids active and in perfect shape. Additional information Research shows that multipurpose solutions are effective against germs that can lead to eye infections and other conditions. A 2016 study found that multipurpose products containing the disinfectants chlorhexidine, polyaminopropyl biguanide (PAPB), and the antibacterial preservative ethylenediaminetetraacetic acid (EDPA) were effective against germs that cause keratitis, an inflammation of the cornea. Results of in vitro study following FDA/ISO stand-alone procedure for disinfecting products modified with organic soil added to create a more rigorous test condition. Primary criteria for effective disinfection are defined as a reduction in the number of bacteria by a minimum of 3 logs (99.9%) and a reduction of mold and yeast by a minimum of 1 log (90%) within the recommended disinfection time. Stuermer EK et al. Comparing Two Polymeric Biguanides: Chemical Distinction, Antiseptic Efficacy and Cytotoxicity of Polyaminopropyl biguanide and Polyhexamethylene biguanide. Journal of Medical Microbiology. 2016;65(8):867-876. If an individual does not follow safety recommendations, they have an increased risk of developing an eye infection.

Biotrue Hydration Boost Contact Lens Drops

Because Clear Care’s Cleaning & Disinfecting Solution is hydrogen peroxide-based, it may be a suitable choice for those who find multipurpose solutions irritating. The solution is also preservative-free, to further cut down on irritation. This product comes with a case that converts the hydrogen peroxide into saline within a few hours. People should avoid getting hydrogen peroxide in or near the eye, as this can result in stinging, burning, irritation, eye pain, or injury. Chlorhexidine-Bactericidal: When bound with EDTA, it has increased efficacy for gas permeable lenses, but is not as effective against fungi/yeast An in vitro lysozyme activity assay was used to determine the ability of BPZ02 to prevent the denaturation of lysozyme, in comparison to multiple marketed multi- purpose solutions. This assay is based on the ability of lysozyme to digest the cell wall of micro-organisms in a suspension. The results indicate that BPZ02 has the ability to stabilize lysozyme in its native form under chemical denaturation conditions that typically denature lysozyme. Statistically significant greater stabilization of lysozyme was observed with BPZ02 compared to competitive multi-purpose solutions and a phosphate buffered saline control. Finnegan S, Percival SL. EDTA: An Antimicrobial and Antibiofilm Agent for Use in Wound Care. Adv Wound Care (New Rochelle). 2015;4(7):415-421. doi:10.1089/wound.2014.0577

Ethylenediamine tetraacetate (EDTA): Chelating agent (reduces heavy metals) and not a true preservative Results of in vitro study following FDA/ISO standalone procedure for disinfecting products modified with organic soil added to create a more rigorous test condition. Primary criteria for effective disinfection are defined as a reduction in the number of bacteria by a minimum of 3 logs (99.9%) and a reduction of mold and yeast by a minimum of 1 log (90%) within the recommended disinfection time. Competitive multi-purpose solutions tested included AMO COMPLETE Easy Rub, Alcon OPTI-FREE Express and Alcon OPTI-FREE RepleniSH.Basaran P. Inhibition effect of belzalkonium chloride treatment on growth of common food contaminating fungal species. J Food Sci Technol. 2011;48(4):515-519. doi:10.1007/s13197-011-0268-5