2024-08-28
Colored Contact Lenses: Exploring Options for Cosmetic and Prescription Use
As an optometrist with years of experience, I've seen a surge in interest in colored contact lenses. People are curious about enhancing their appearance, trying out different looks, and even correcting vision simultaneously. But it’s not as simple as picking a shade. There's a lot to understand about safety, fit, and the different types available. This post aims to give you a thorough overview, whether you're a first-time wearer or already familiar with contacts.
Are Colored Contacts Safe? What Most People Don’t Realize
This is the most important question. The biggest risks associated with colored contacts aren’t the lenses themselves, but how people obtain and wear them. Many problems arise from purchasing lenses without a proper prescription and fitting. We see a disproportionate number of infections and corneal abrasions in patients who’ve bought lenses online from unregulated sources or at costume shops.
Here's what you need to know: Contact lenses, even cosmetic ones, are medical devices. They sit directly on the cornea – the clear front surface of your eye – and can deprive it of oxygen. A poorly fitted lens, or one made of low-quality material, can cause:
- Corneal Ulcers: Open sores on the cornea, incredibly painful and potentially sight-threatening.
- Conjunctivitis (Pink Eye): Inflammation of the conjunctiva, often bacterial.
- Corneal Abrasions: Scratches on the cornea, extremely uncomfortable.
- Neovascularization: The growth of new blood vessels in the cornea, a response to chronic oxygen deprivation. This can impair vision long-term.
A proper eye exam ensures the lenses fit correctly, allowing sufficient oxygen flow to your cornea. We measure not just your prescription, but also the curvature of your eye (base curve) and the diameter of the lens needed for a comfortable and safe fit. Ignoring this can have serious consequences.
Cosmetic vs. Prescription Colored Lenses: What’s the Difference?
Both cosmetic (plano – meaning no prescription) and prescription colored lenses are made from similar materials, typically hydrogels or silicone hydrogels. The key difference, of course, is the added power to correct vision. But there are also variations in how the color is applied:
- Enhancing Tint: These tints are very subtle and designed to bring out your natural eye color. They don’t significantly change your eye color, just enhance what’s already there. They’re usually transparent and work best on lighter-colored eyes.
- Opaque Tint: These completely mask your natural eye color. They are ideal for darker eyes, as they provide full coverage. Opaque lenses come in a wide range of colours, from natural browns and blues to more vibrant shades.
- Enhancing/Visibility Tint: Often used with clear lenses during eye exams, these tints make the lens easier to handle and see. They’re not meant to change eye color.
- Special Effects Lenses: These include designs like cat eyes, spirals, or even patterns. They often have a lower oxygen permeability and require extra care.
Important Note: Even if you have perfect vision, you still need an eye exam and fitting to ensure cosmetic lenses are safe to wear.
What About Different Lens Materials? Hydrogel vs. Silicone Hydrogel
The material a lens is made from significantly impacts comfort and oxygen permeability.
- Hydrogel Lenses: These are soft and contain a significant amount of water. They are comfortable but have lower oxygen permeability compared to silicone hydrogel. This means less oxygen reaches the cornea, increasing the risk of complications with extended wear.
- Silicone Hydrogel Lenses: These lenses incorporate silicone, which allows more oxygen to pass through to the cornea. They are generally more comfortable for extended wear and have a lower risk of complications. While they are typically more expensive upfront (around $60-$100 per box, compared to $40-$80 for hydrogel), the benefits in terms of eye health often outweigh the cost.
For many patients, especially those planning to wear lenses for extended periods or who live in a dry climate like we sometimes experience here in Okotoks, silicone hydrogel is the preferred option.
How Long Can You Wear Colored Contacts? Daily, Weekly, or Extended Wear?
The wear schedule depends on the lens material, your eye health, and your tear production.
- Daily Disposables: These are the safest option. You wear them once and discard them. They minimize the build-up of deposits and reduce the risk of infection. They're generally the most expensive per year ($500 - $800), but the convenience and safety are worth it for many.
- Weekly/Bi-Weekly Lenses: These require daily cleaning and storage in solution. They’re more affordable than daily disposables ($200-$400 per year), but require diligent hygiene.
- Extended Wear Lenses: Designed to be worn continuously for up to 6 nights/7 days. However, even with silicone hydrogel lenses, extended wear isn't risk-free. I often advise patients to avoid extended wear whenever possible, as removing lenses nightly allows the eyes to breathe and reduces the risk of complications.
A crucial point: Always follow the recommended wear schedule. Overwearing lenses dramatically increases the risk of complications.
Cost Considerations: What Can You Expect to Pay?
The total cost of colored contacts includes the lenses themselves, the eye exam and fitting fee, and the cleaning solution.
- Eye Exam & Fitting: Expect to pay between $100 and $200 for a comprehensive eye exam and contact lens fitting. This fee covers the time and expertise needed to ensure a safe and comfortable fit.
- Lenses: As mentioned above, the cost varies greatly depending on the material and wear schedule.
- Cleaning Solution: Approximately $20-$30 per bottle, lasting 1-3 months.
While buying lenses online may seem cheaper, remember that you’re bypassing the crucial step of a professional fitting. A bargain lens isn't a bargain if it damages your vision.
What About Dark Eyes? Can Colored Contacts Really Change My Eye Colour?
This is a common question! Opaque tinted lenses are designed to cover dark irises. However, the result is never a complete colour change. The natural colour of your iris will still subtly influence the final appearance. For example, a blue lens on a dark brown eye will likely appear more of a greenish-blue than a vibrant, true blue.
Realistic expectations are key. I always advise patients to look at examples of how lenses appear on people with similar eye colours to theirs.
How to Care for Your Colored Contact Lenses
Proper care is paramount. Here’s a quick checklist:
- Wash your hands thoroughly with soap and water before handling lenses.
- Clean and disinfect lenses daily with a recommended solution.
- Store lenses in a clean case filled with fresh solution.
- Never reuse solution.
- Replace the lens case every 1-3 months.
- Never wear damaged or torn lenses.
- Remove lenses before swimming or showering.
If you experience any redness, pain, blurred vision, or excessive tearing, remove the lenses immediately and contact your optometrist.
Ultimately, coloured contact lenses can be a fun and safe way to enhance your appearance or correct your vision, but only with proper care and a professional fitting. Don’t risk your eye health for a temporary look.