2024-09-17
Contact Lens Care for Beginners: Cleaning, Storage, and Replacement Guidelines
So, you’ve been fitted with contact lenses – welcome to a world of comfortable vision without glasses! But with that freedom comes responsibility. Proper contact lens care isn’t just about comfort; it's about safeguarding your eye health. I’ve been fitting and advising patients on contact lenses in practice for over 15 years, and I still see preventable complications arising from inadequate care. This post will cover everything a new contact lens wearer needs to know about cleaning, storage, and replacement schedules. It's more detailed than what you’ll often find, because your eyes deserve the best information.
What’s the Big Deal About Cleaning? Why Can’t I Just Rinse?
Many new wearers ask why cleaning is so important. It’s not just about removing debris. Contact lenses, even daily disposables, accumulate deposits over time. These can include proteins from your tears, lipids (fats), calcium, and environmental irritants. These deposits aren't just blurry; they create microscopic imperfections on the lens surface. These imperfections reduce oxygen permeability (the amount of oxygen reaching your cornea), increase the risk of discomfort, and—most seriously—significantly elevate the risk of infection. Think of it like this: a clean lens breathes, a dirty lens suffocates. Rinsing with solution alone doesn't remove these bound deposits; it just temporarily dislodges loose particles.
What Type of Cleaning Solution Should I Use?
This is where it gets a little complex. There are several types of solutions, and what’s best for you depends on your lens material and your individual eye characteristics. Here’s a breakdown:
- Multi-Purpose Solutions: These are the most common and convenient. They clean, disinfect, rinse, and store lenses. Look for solutions containing ingredients like poloxamine or polyethylene glycol (PEG) to help remove protein and lipid deposits.
- Hydrogen Peroxide Solutions: These are excellent for people with sensitivities or allergies to preservatives found in multi-purpose solutions. They require a special neutralizing step after disinfection—you absolutely must rinse the lenses thoroughly with sterile saline solution before insertion. Using hydrogen peroxide solution without proper neutralization will cause severe burning and damage to your cornea.
- Saline Solution: This is primarily for rinsing lenses after cleaning and before insertion. It does not disinfect, so it shouldn't be used as your sole cleaning solution.
- Specialty Solutions: Some lenses, particularly silicone hydrogel lenses, benefit from solutions specifically formulated for those materials.
Important Note: Never use tap water, saliva, or homemade solutions to clean or store your lenses. Tap water contains microorganisms that can cause serious eye infections, including Acanthamoeba keratitis—a rare but devastating corneal infection. Saliva doesn't have the necessary disinfecting properties.
The Proper Cleaning Routine: Step-by-Step
Here's how to clean your lenses correctly, assuming you're using a multi-purpose solution. This might sound detailed, but it takes less than a minute once you get the hang of it:
- Wash your hands thoroughly with soap and water, and dry them with a lint-free towel. This is the most crucial step.
- Remove one lens and place it in the palm of your clean hand.
- Apply a few drops of multi-purpose solution to the lens.
- Gently rub the lens with your fingertip for 20-30 seconds. Be sure to cover the entire surface – this physical action is vital for removing deposits. Don't use your fingernails!
- Rinse the lens thoroughly with fresh solution.
- Place the cleaned lens into a clean lens case filled with fresh solution.
- Repeat for the other lens.
- Never reuse solution. Empty and refill the case with fresh solution every time you store your lenses.
Lens Case Hygiene: A Surprisingly Common Problem
What most people don't realize is that lens cases themselves are a major source of contamination. Studies have shown that over 50% of lens cases harbor bacterial and fungal growth, even with regular cleaning. Here's what to do:
- Clean your case daily with multi-purpose solution, and allow it to air dry upside down.
- Replace your lens case at least every three months. Consider it like a toothbrush—it needs regular replacement.
- Never use tap water to rinse your case.
How Often Should I Replace My Lenses?
Replacement schedules vary depending on the lens type. Here’s a general guide:
- Daily Disposables: Wear once and discard. These are the most hygienic option and are ideal for sensitive eyes or those prone to allergies.
- Two-Week Disposables: Remove, clean, and store overnight. Replace every two weeks, without exception. Even if they feel comfortable, prolonged wear increases deposit buildup and infection risk.
- Monthly Disposables: Remove, clean, and store overnight. Replace every month, even if you don’t wear them every day.
- Extended Wear Lenses: These are designed for continuous wear (up to 6 nights/7 days), but even with these, regular removal and cleaning are recommended for optimal health. Not all eyes are suitable for extended wear, and it requires careful monitoring.
Don't push it. Ignoring replacement schedules is a common mistake. A box of lenses might seem expensive (approximately $40-$80 per month, depending on the type), but the cost of treating a corneal infection can be far greater—both financially and in terms of your vision.
What About Travel?
When traveling, especially to Okotoks or Calgary for a visit, bring a travel-sized lens care kit containing solution, a lens case, and lubricating drops. Never use tap water for rinsing or cleaning. Consider packing extra lenses in case of loss or damage.
When to See Your Optometrist
Contact lenses are medical devices, and regular check-ups are essential. Schedule a comprehensive eye exam at least annually, or more frequently if recommended by your optometrist. See your optometrist immediately if you experience any of the following:
- Redness
- Pain
- Blurred vision
- Excessive tearing
- Sensitivity to light
- The feeling that something is in your eye
These could be signs of a serious infection or other complication. Early detection and treatment are crucial to preserving your vision.
Following these guidelines diligently will help you enjoy the benefits of contact lenses safely and comfortably for years to come. Remember, taking care of your eyes is an investment in your long-term vision.