2024-05-02
Things You Should Know About Contact Lenses
For over twenty years, I’ve helped patients in and around Okotoks, Alberta navigate the world of contact lenses. And honestly, it's a world that's changed a lot. It's no longer just a simple choice between soft and hard lenses. Today's options are incredibly diverse, and making the right decision requires understanding more than just what your friend wears. This post aims to give you a comprehensive overview, covering everything from suitability to care, and what you might not expect.
Am I Even a Good Candidate for Contact Lenses?
This is the first question, and it's more complex than you might think. While most people can wear contacts, some conditions make it difficult or even impossible. Common factors we assess include:
- Dry Eye: This is probably the biggest challenge we see. Contacts can exacerbate dryness, so we need to ensure adequate tear production or recommend lenses specifically designed for dry eyes (more on that later). A simple tear film assessment during your exam is crucial.
- Astigmatism: Historically a barrier, astigmatism is now very effectively corrected with toric contact lenses. The degree and type of astigmatism matter – higher orders can be trickier, but we have lenses to address them.
- Presbyopia: If you’re over 40, chances are you’re experiencing presbyopia – the age-related loss of near focusing ability. Multifocal contact lenses, similar to progressive glasses, can provide clear vision at all distances. There are different designs (concentric, aspheric, etc.), and finding the right one often involves a trial-and-error period.
- Allergies: Seasonal or perennial allergies can make contact lens wear uncomfortable. Daily disposable lenses are often best in these cases, as they minimize protein and allergen buildup.
- Certain Medical Conditions: Conditions like Sjögren’s syndrome or rheumatoid arthritis can affect tear production and make contact lens wear problematic. Full disclosure of your medical history is essential.
It’s not always a straightforward "yes" or "no." Sometimes, with careful lens selection and diligent care, we can make contact lenses work even with mild challenges.
What Types of Contact Lenses Are Available in 2026?
The landscape is diverse. Here’s a breakdown of the main categories:
- Soft Lenses: The most common type. These are comfortable and come in various materials (hydrogels, silicon hydrogels) and replacement schedules.
- Daily Disposables: Worn once and discarded. The most hygienic option and ideal for infrequent wear, allergies, or dry eyes. Expect to pay roughly $35-$60 per box of 30 lenses, or $420-$720 per year.
- Two-Weekly Disposables: Worn for two weeks, then discarded. A good balance of convenience and cost. Approximately $25-$45 per box of 6 lenses, or $210-$390 per year.
- Monthly Disposables: Worn for a month, then discarded. The most cost-effective option, but requires diligent cleaning. Around $20-$35 per box of 6 lenses, or $140-$240 per year.
- Rigid Gas Permeable (RGP) Lenses: Also known as hard lenses, these provide sharper vision, especially for high astigmatism or corneal irregularities (like keratoconus). They require an adaptation period and are typically more expensive upfront (around $150-$300 per lens), but last longer (up to 6-7 years with proper care).
- Hybrid Lenses: Combine the benefits of both soft and RGP lenses – a rigid centre for crisp vision and a soft skirt for comfort. Excellent for certain corneal conditions but are a premium option (around $400-$600 per lens).
- Multifocal Lenses: Correct both distance and near vision for presbyopia. Several designs are available, and finding the best fit requires a careful assessment.
- Toric Lenses: Designed to correct astigmatism. They have a specific orientation, so it’s crucial they stay in the correct position on your eye.
- Cosmetic Lenses: These lenses change the colour of your eyes and must be fitted by an eye care professional. Avoid purchasing cosmetic lenses online without a prescription, as ill-fitting lenses can cause serious damage.
What About Cost? Breaking Down the True Expenses
People often only consider the cost of the lenses themselves. Here’s a realistic breakdown for annual costs (approximate, based on 2026 pricing):
- Daily Disposables: $420 - $720 + $150 - $250 (annual exams & solutions) = $570 - $970
- Two-Weekly Disposables: $210 - $390 + $100 - $150 (annual exams & solutions) = $310 - $540
- Monthly Disposables: $140 - $240 + $80 - $120 (annual exams & solutions) = $220 - $360
- RGP Lenses: Initial cost $300 - $600 + $80 - $120 (annual exams & solutions) = $380 - $720 (plus potential replacement costs after a few years)
Remember to factor in the cost of lens care solutions, cases, and annual eye exams. A comprehensive eye exam to ensure proper fit and monitor eye health is not optional.
Contact Lens Care: What Most People Don't Realize
This is where things often go wrong. It’s not just about rubbing the lenses with solution. Here's what you need to know:
- Hand Hygiene: Wash your hands thoroughly with soap and water before handling your lenses. This is non-negotiable.
- Solution Matters: Use only the solution recommended by your optometrist. Don't use tap water, saliva, or homemade solutions – these can harbour harmful bacteria.
- Cleaning is Key: Even with daily disposables, it's good practice to rinse the lenses with solution before inserting. For reusable lenses, follow the cleaning instructions provided by your optometrist. Rub and rinse, don’t just soak.
- Case Hygiene: Empty, rinse, and air-dry your lens case daily. Replace your case every 1-3 months. Bacteria love lens cases.
- Never Sleep in Lenses: Unless specifically prescribed for extended wear by your optometrist, remove your lenses before sleeping. Sleeping in lenses significantly increases the risk of infection.
- Redness or Pain = Stop! If you experience redness, pain, blurred vision, or excessive tearing, remove your lenses immediately and contact your optometrist.
Serious corneal infections are rare but can lead to vision loss. Proper lens care is the best prevention.
What About Oxygen Permeability? Why It Matters
This is a crucial factor, particularly with soft lenses. Oxygen permeability (Dk/t value) measures how much oxygen can pass through the lens to your cornea. The cornea needs oxygen to stay healthy. Lower Dk/t values can lead to corneal swelling, neovascularization (growth of new blood vessels), and discomfort. Silicon hydrogel lenses generally have higher Dk/t values than traditional hydrogel lenses and are recommended for extended wear or for those prone to dryness. We carefully consider this when selecting lenses for each patient.
Choosing the right contact lenses is a personal journey. What works for one person won’t necessarily work for another. A thorough eye exam, honest discussion of your lifestyle and needs, and a willingness to try different options are essential for success.
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