Contact lens solution plays an important role in maintaining eye health and ensuring the longevity of contact lenses. Proper use of these solutions is important for safety and comfort, preventing infections and irritation. Following recommended guidelines for lens care is a simple way to protect your vision.
Understanding Different Solutions
Several types of contact lens solutions are available, each designed for specific functions. Multipurpose solutions are a common all-in-one option that clean, rinse, disinfect, and store soft contact lenses. These solutions contain disinfectants like polyquaternium and surfactants such as poloxamine, which kill microorganisms and remove deposits from the lens surface.
Hydrogen peroxide systems offer an alternative for lens disinfection, often recommended for individuals with sensitivities to multipurpose solution preservatives. They use 3% hydrogen peroxide to break down proteins and deposits, providing a deep clean. However, hydrogen peroxide must be neutralized before lenses can be safely placed in the eye, as direct contact can cause stinging and burning. This neutralization typically occurs in a special case with a platinum-coated disc or through a neutralizing tablet, converting the peroxide into a safe saline solution over several hours. Saline solutions are useful for rinsing and temporarily storing lenses to prevent drying, but do not disinfect and should not be used for cleaning or prolonged storage.
Daily Cleaning and Storage Routine
A consistent daily cleaning and storage routine is important for contact lens wearers. Begin by thoroughly washing your hands with soap and water and drying them with a lint-free towel before touching your lenses. This minimizes transfer of dirt, oils, and bacteria to your eyes.
After removing one contact lens, place it in the palm of your hand. Apply a few drops of fresh contact lens solution onto the lens. Gently rub the lens with the pad of your finger in a back-and-forth or circular motion for about 10 to 20 seconds to effectively loosen and remove surface deposits. Even if a solution is marketed as “no-rub,” a gentle rubbing step is recommended for better cleaning efficacy.
Following the rubbing step, thoroughly rinse the lens with a steady stream of fresh solution to wash away any loosened particles. Then, place the cleaned lens into its designated compartment in a clean contact lens case, filling it completely with fresh solution. Never reuse old solution or “top off” the existing solution, as its disinfecting properties diminish after initial use, increasing the risk of bacterial growth and eye infections. Repeat the entire process for the other lens, ensuring both lenses are fully submerged and soaked for the manufacturer’s recommended time, typically at least four to eight hours or overnight.
Key Considerations for Safe Use
Beyond the daily cleaning routine, several safety guidelines are important for maintaining healthy contact lens wear. Never use tap water to rinse, clean, or store contact lenses or their cases. Tap water can contain microorganisms like Acanthamoeba, which can cause severe, potentially sight-threatening eye infections. Even filtered or distilled water is not a safe alternative as it lacks disinfecting properties.
Adhering to solution expiration dates is also important. Contact lens solutions contain preservatives and disinfectants that degrade over time, reducing their effectiveness in preventing contamination. The expiration date on the bottle indicates when the solution is guaranteed to perform as intended. Once opened, most solutions should be discarded within 90 days, regardless of the printed expiration date, as prolonged exposure to air and potential contaminants can diminish their efficacy.
Proper contact lens case hygiene is equally important. Cases can become a source of bacterial and fungal contamination, even with frequent cleaning. After each use, empty the old solution, rinse the case with fresh contact lens solution (never water), and allow it to air dry with the caps off. Replace your contact lens case at least every three months, or immediately if it shows signs of wear, damage, or discoloration. Following these guidelines, along with your eye care professional’s specific recommendations, helps prevent complications and supports long-term eye health.