What Exactly Is Ortho-K, and How Does it Work?

Ortho-K, or Orthokeratology, often called “night lenses”, is a specialized contact lens therapy used to temporarily reshape the cornea while you sleep. It’s not a quick fix, but a carefully managed treatment aimed at slowing the progression of myopia (nearsightedness) in children. The lenses gently flatten the central part of the cornea, correcting vision. When the lenses are removed in the morning, the temporary reshaping allows for clear vision throughout the day – often without the need for glasses or daytime contacts.

Think of it like this: a slightly pliable, custom-designed contact lens is applied before bed. The corneal tissue is remarkably responsive, and overnight pressure remodels it. The effect isn't permanent, which is why it’s called ‘ortho-’, meaning correction, not cure. It's a reversible process. If lens wear is stopped, the cornea gradually returns to its original shape. This is crucial to understand—it’s a management strategy, not a cure for myopia.

Is Ortho-K Right for My Child? Key Suitability Criteria

Not every child is a good candidate for Ortho-K. Several factors determine suitability. Here's a detailed breakdown:

• Age: Generally, Ortho-K is best initiated between the ages of 8 and 16. Starting earlier can be very effective because the eyes are still developing, but there’s a lower limit due to the need for responsible lens care. It can be considered for teenagers and young adults, but the younger the start, the more potential for slowing progression.
• Amount of Myopia: Ortho-K is most effective for mild to moderate myopia – typically up to -6.00 diopters. Higher prescriptions can be more challenging to correct and manage with this method.
• Corneal Health and Shape: A thorough corneal evaluation is essential. The cornea needs to be healthy, free from irregularities (like keratoconus), and have a suitable shape for effective reshaping. We use advanced corneal topography to map the corneal surface and identify any contraindications.
• Astigmatism: Low to moderate astigmatism can often be corrected with Ortho-K lenses. High astigmatism complicates the fitting process and may not be suitable.
• Motivation and Compliance: This is huge. Ortho-K requires consistent nightly lens wear and diligent cleaning. A child (and parent) must be committed to a rigorous hygiene routine to minimize the risk of infection. It's not a solution for someone who won't consistently follow instructions.
• Tear Film Quality: Dry eye can significantly impact comfort and success with Ortho-K. If your child has pre-existing dry eye, it needs to be addressed before starting treatment.

What most parents don't realize is that a successful Ortho-K fitting isn't just about getting the lenses on the eyes. It’s about a customized treatment plan, consistent monitoring, and a proactive approach to hygiene and potential complications.

What's the Fitting Process Like, and What Costs Are Involved?

The fitting process isn't a one-time event. It's a series of appointments over several weeks, and sometimes longer.

1. Initial Consultation and Assessment: This includes a comprehensive eye exam, corneal topography, and a discussion of your child’s lifestyle and expectations.
2. Trial Lens Fitting: We’ll fit your child with a set of diagnostic trial lenses. They'll wear them overnight, and we'll evaluate the corneal reshaping and visual outcome the next day. Several sets of trial lenses may be needed to find the optimal fit.
3. Follow-Up Appointments: Regular follow-ups (initially weekly, then monthly, then every few months) are crucial to monitor the treatment’s effectiveness, make adjustments to the lens design, and ensure corneal health.

Cost: The initial cost for Ortho-K in Calgary, AB, typically ranges from $1,500 to $2,500. This includes the initial assessment, diagnostic fitting, lenses, and the first few follow-up appointments. Annual follow-up care and replacement lenses (lenses generally last 1-2 years, depending on care) will add to the ongoing cost. It’s vital to discuss all costs upfront with your eye care professional.

Long-Term Considerations: What You Need to Know

Ortho-K isn’t a "set it and forget it" solution. Long-term commitment is essential.

• Continued Monitoring: Even after the initial fitting is successful, ongoing monitoring is vital to ensure continued effectiveness and detect any potential complications.
• Lens Replacement: Ortho-K lenses need to be replaced every 1-2 years, as the lens material can degrade over time, affecting its effectiveness and comfort.
• Hygiene: Strict adherence to lens cleaning and disinfection protocols is non-negotiable to minimize the risk of corneal infections.
• Progression Control: While Ortho-K is designed to slow myopia progression, it doesn't always stop it completely. Regular monitoring of myopia progression is necessary, and alternative or adjunctive treatments may be considered. Research suggests that combining Ortho-K with other myopia control methods, such as low-dose atropine eye drops, can yield even better results.
• Potential Risks: Like all contact lens wear, Ortho-K carries a small risk of corneal infection, corneal abrasion, and discomfort. These risks are minimized with proper lens care and regular monitoring.

Many parents are concerned about the long-term effects of corneal reshaping. While the cornea does return to its original shape if lens wear stops, some studies suggest potential subtle long-term changes in corneal biomechanics. However, the benefits of slowing myopia progression often outweigh these potential risks, particularly for children with rapidly progressing myopia.

Is There Anything Else I Should Consider?

It's important to remember that Ortho-K isn’t the only myopia control option available. Other strategies include:

• Multifocal Contact Lenses: These lenses can also slow myopia progression.
• Multifocal Spectacles: Specially designed glasses can provide some degree of myopia control. You can learn more about different lens types here.
• Atropine Eye Drops: Low-dose atropine eye drops are an effective treatment for slowing myopia progression, but they can have side effects like blurred near vision and light sensitivity.
• Increased Outdoor Time: Encouraging children to spend more time outdoors has been shown to reduce the risk of myopia development and progression.

The best myopia control strategy for your child will depend on their individual needs and circumstances. A thorough discussion with a qualified eye care professional is essential to determine the most appropriate approach.

Remember, Alberta Health Care ONLY covers eye exams for children under 19 and adults 65+. Everyone else (ages 19-64) pays out of pocket unless they have private insurance.

Contact Us to discuss if Ortho-K is the right choice for your child’s vision health: Contact Us.