Newer generation contact lens solution surfactants are custom designed specifically to interact with hydrophobic silicone to create a more comfortable and long lasting wettable silicone hydrogel experience. The size of the surfactant molecule affects how tightly it will bind to the lens surface, and subsequently how long it will stay on the lens surface. In the case of a surfactant wetting agent, the hydrophobic end interacts with the dry hydrophobic lens surface, allowing the lens surface to regain hydrophilicity, as well as lubricity. This creates a process that is very similar to what happens when we wash our hands with soap.
#Contacts cleaner review free
The free hydrophilic ends are then able to react with water, and the micelle can then be whisked off the lens surface. In the case of surfactant cleaning products, the hydrophobic ends cluster around debris to form micelles. Surfactants are composed of both hydrophilic and hydrophobic ends in the molecule structure. This month’s column will focus on the role each of these ingredients play in the finished product.Ī surfactant, or surface-active agent, is used to both clean and wet the contact lens. These products contain two major ingredients: surfactants and disinfectants. So, let’s take some time to step back and review some of the basics of contact lens solutions. The basics of contact lens solutions that I’ve slowly moved away from are actually some of the most important aspects of lens care to understand: how they clean, disinfect and wet the lens surface to provide comfortable and safe contact lens wear. I had drifted so far away from the basics that I had lost the message altogether. Recently, as I was reviewing contact lens solutions with my wide-eyed, mortified looking residents, I realized I had lost sight of the big picture. I am an educator, so I have a tendency to think about the minute devilish details, how those details fit into the big picture and-most importantly-how I’m going to teach them.
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