2024-07-19
Contact Lens Myths Debunked: Separating Fact from Fiction
As an optometrist practicing for over 20 years, I've heard just about every story you can imagine about contact lenses. There's a lot of misinformation out there, often passed down through generations or picked up from unreliable sources. People in and around Okotoks, Alberta, are no different! Today, I want to address some of the most common myths, providing you with accurate information to make informed decisions about your eye health.
Are Contact Lenses Really Unsafe?
This is a big one. The perception that contact lenses are inherently dangerous is largely outdated. While there are risks associated with any type of lens wear – and we'll cover those – modern contact lenses, combined with proper care, are remarkably safe for the vast majority of people. The biggest issue isn't the lenses themselves, but compliance with wearing and care instructions. Think of it like driving a car: a car isn't dangerous, but irresponsible driving is.
Historically, older rigid gas permeable (RGP) lenses were less comfortable and more prone to corneal abrasion. Modern soft lenses, especially silicone hydrogel materials, allow much more oxygen to reach the cornea, drastically reducing those risks. However, improper cleaning creates a biofilm—a slimy layer of bacteria and debris—on the lens surface. This is the primary cause of infections. We emphasize hygiene protocols for a reason.
Can I Sleep in My Contact Lenses?
This is a tricky one. Extended wear lenses do exist, approved for overnight wear for up to 30 nights continuously. However, they aren't suitable for everyone. Here's the honest truth: even with approved extended wear lenses, the risk of corneal infection is significantly higher – around 1 in 500 users per year, compared to 1 in 10,000 for daily wear lenses.
I strongly advise against routinely sleeping in lenses, even if they are approved for it. Corneal oxygen deprivation increases overnight, and even small micro-abrasions, which you won’t feel, provide a portal for bacteria. Many patients think that if it “feels fine”, it is fine. That’s simply not true. Infections can develop silently. If you absolutely must occasionally sleep in your lenses (an unexpected late night, travel), ensure they are specifically designed for extended wear and discuss it with your optometrist first. We’ll assess your individual risk factors.
Do I Need a Different Prescription for Reading Than for Distance?
The short answer is: potentially, yes. This is called presbyopia, and it's a natural part of aging. Around age 40, the lens inside your eye loses its flexibility, making it harder to focus on near objects. If you've worn glasses or contacts for distance vision for years, you likely need a separate prescription for reading.
There are several solutions:
- Reading Glasses: The simplest and most affordable option.
- Bifocal or Progressive Lenses: These provide distance and near correction in the same lens.
- Multifocal Contact Lenses: These are contacts designed with different zones for distance, intermediate, and near vision. They take some getting used to, and not everyone adapts well.
- Monovision: One eye is corrected for distance, and the other for near. This works well for some, but it reduces depth perception slightly. We'd typically do a trial with contact lenses to see if you adapt before committing to this long-term.
Are All Contact Lens Materials the Same?
Absolutely not! Contact lens materials have evolved dramatically. Here’s a breakdown:
- Hydrogels: These are older materials that contain a lot of water. They are comfortable but allow less oxygen to reach the cornea.
- Silicone Hydrogels: The current standard. They combine silicone and hydrogel, allowing significantly more oxygen transmission. This leads to healthier eyes and reduced risk of complications.
- Hybrid Lenses: These have a rigid gas permeable center with a soft hydrogel skirt. They offer the crisp vision of RGP lenses with the comfort of soft lenses.
- Daily Disposables: Made from hydrogel or silicone hydrogel, worn once and discarded. They offer the highest level of convenience and hygiene, minimizing the risk of buildup and infection.
The best material for you depends on factors like your prescription, tear production, wearing time, and lifestyle. For example, someone with dry eyes will likely benefit from a silicone hydrogel lens designed to retain moisture. Someone who frequently travels might prefer daily disposables.
If My Vision Isn’t Changing, Do I Still Need an Eye Exam?
Yes! Vision isn’t the only thing we check during an eye exam. We assess the overall health of your eyes, including the cornea, retina, and optic nerve. Many eye diseases, like glaucoma and macular degeneration, have no early symptoms. Regular exams (typically every 1-2 years, depending on age and risk factors) can detect these conditions early, when treatment is most effective. A comprehensive eye exam isn't just about getting a new contact lens prescription; it's about protecting your sight for life.
How Much Do Contact Lenses Actually Cost?
The cost of contact lenses varies greatly depending on the material, brand, and quantity. Here’s a rough breakdown (as of 2026 – prices are subject to change):
- Daily Disposables: $40-$70 per box (30 lenses) – typically the most expensive per lens, but offer the most convenience and hygiene. A year’s supply could be $800-$1400.
- Two-Weekly Lenses: $30-$50 per box (6 lenses) – a good balance between cost and convenience. A year’s supply: $500-$900.
- Monthly Lenses: $20-$40 per box (6 lenses) – the most affordable option, but require diligent cleaning. A year’s supply: $400 - $800.
- RGP Lenses: $150 - $300 per lens (lasting 1-2 years) – often used for astigmatism or irregular corneas.
Don't forget to factor in the cost of solutions, cases, and eye exam fees. While online retailers can offer competitive prices, it’s crucial to have a valid prescription and to obtain lenses from a reputable source. Cheap lenses from unverified sellers can be counterfeit or improperly manufactured, posing a risk to your eye health.
What If Contact Lenses Just Don't Feel Comfortable?
Don't suffer in silence! Discomfort is a sign that something isn't right. Possible causes include:
- Poor Fit: The lens may be too tight, too loose, or the base curve doesn’t match your cornea.
- Dry Eyes: Your eyes may not be producing enough tears to keep the lenses lubricated.
- Lens Deposits: Buildup of protein and debris on the lens surface.
- Allergies: You may be allergic to the lens material or cleaning solution.
We can re-evaluate the fit, recommend different lens materials or cleaning solutions, or diagnose and treat any underlying dry eye condition. There’s usually a solution. It’s important to let us know immediately if you experience persistent discomfort, redness, pain, or blurred vision.
Remember, choosing and caring for contact lenses is a partnership between you and your eye care professional. Don't hesitate to ask questions and address any concerns you have.
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