|BioTrue from B+L combines Tectronic 1107 with hyaluronic acid.|
As contact lens technology advances, we need to pay more attention to pairing patients and solutions.
Contact lenses have advanced significantly in recent years. Over the last decade we’ve seen the transition from hydrogel lens materials to silicone hydrogel lenses. Silicone hydrogel lenses differ from their predecessor, as their name implies, by the introduction of silicone. Although this creates the opportunity to allow greater levels of oxygen through the lens to the cornea, it also creates challenges with solution-lens interactions. Most notable was the work of Dr. Gary Andrasko that looked at fluorescein staining of the cornea after lenses were soaked in various contact lens solutions and worn for several hours.
Needless to say, the advent of new lens technologies have brought about advancements in solutions themselves, the most recent, appropriately, in the era of silicone hydrogel lenses. These products aim to optimize comfort and disinfection of both hydrogel and, more importantly, silicone hydrogel lenses. Although hydrogen peroxide systems definitely have a place in our practices, for the intentions of this article, we will focus on multipurpose disinfecting solutions.
Bausch + Lomb’s Biotrue is the company’s newest generation multipurpose disinfecting solution and uses a combination of two chemicals: the copolymer surfactant Tetronic 1107 (ethylene oxide/propylene oxide) and the biological lubricant hyaluronic acid. Hyaluronic acid was introduced to the solution to increase the comfort of the lens-wearing experience. The disinfecting agents in Biotrue are a combination of polyhexamethylene biguanide (PHMB) and polyquaternium-1 (PQ-1).
Abbott Medical Optics’ (AMO) RevitaLens OcuTec‘ contains a unique surfactant, Tetronic 904, which is designed to work with a variety of contact lens surfaces. Revitalens OcuTec seems to have a strong level of disinfection efficacy””the by-product of a combination of polyquaternium-1 and alexidine. Both the surfactant and disinfecting agents are advancements over its predecessor.
Alcon Laboratories, Inc.’s Opti-Free PureMoist‘ contains poly-oxyethylene-poly oxybutylene, a patented molecule developed to enhance the wettability of both hydrogel and silicone hydrogel lenses. Alcon refers to this technology as HydraGlyde Moisture Matrix. The HydraGlyde technology creates a cushion of moisture around the contact lens, which helps patients wear lenses more comfortably and longer each day. Interestingly, by the way that this molecule interacts with the contact lens surface, it actually reduces lipid deposition. The disinfecting platform of this solution is a combination of polyquad and aldox, a proven combination for effective disinfection for more than a decade.
MATCHING PATIENTS TO PRODUCT
It’s critical we actively seek out the contact lens solutions our patients are really using because they can (and will!) have significant effects on their success with contact lens wear. In our offices, we ask patients to bring in their contact lens cases and solutions for their appointment. This lets us visually confirm the solutions they are using in their daily routines, and gives us the ability to guide them to other solutions that may be better engineered for the contemporary lenses they’re wearing. Bottom line: The right solution will ultimately enhance the patient’s lens wearing experience.
Mile Brujic practices at Premier Vision Group in Bowling Green, OH; David Kading practices at Specialty Eyecare Group with locations in Seattle and Kirkland, WA.
WHERE TO FIND IT:
Abbott Medical Optics (AMO) •800-347-5005 •amo-inc.com/products/corneal