The Science Behind Orthokeratology: How Corneal Reshaping Lenses Work

The Science Behind Orthokeratology: How Corneal Reshaping Lenses Work

The Science Behind Orthokeratology: How Corneal Reshaping Lenses Work

In the realm of vision correction, Orthokeratology stands as a revolutionary technique that offers a unique alternative to traditional methods like glasses or contact lenses. This non-surgical approach utilizes specialized lenses to gently reshape the cornea, the clear front part of the eye, allowing for improved visual acuity without the need for corrective eyewear during the day.
 

What is Orthokeratology?

Orthokeratology, also known as Ortho-K or corneal refractive therapy (CRT), is a non-surgical vision correction technique that utilizes specially designed rigid gas permeable (RGP) contact lenses. These lenses are worn overnight while you sleep, gently and temporarily reshaping the cornea to correct refractive errors such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism.
 

The Science Behind Corneal Reshaping Lenses

The science behind Orthokeratology lies in the unique design and material composition of the lenses used in this process. These specialized lenses are meticulously crafted to apply precise and controlled pressure on specific areas of the cornea, gradually reshaping it over time.
 

1. Lens Design:

  • Orthokeratology lenses feature a distinctive reverse geometry design, with a flatter central zone surrounded by progressively steeper peripheral curves.
  • This design creates a controlled force that gently flattens the central cornea while allowing the mid-peripheral cornea to steepen, effectively correcting refractive errors.
 

2. Lens Material:

  • Orthokeratology lenses are typically made from highly oxygen-permeable rigid gas permeable (RGP) materials, such as Boston materials or advanced silicone hydrogel materials.
  • These materials allow sufficient oxygen to reach the cornea during overnight wear, ensuring the health and safety of the eye.
 

3. Corneal Molding:

  • When worn overnight, the orthokeratology lenses apply gentle pressure to the cornea, causing it to temporarily reshape and take on a new curvature.
  • This reshaping process is known as corneal molding, and it occurs due to the natural flexibility and elastic properties of the corneal tissue.
 

4. Tear Reservoir:

  • The lenses are designed with a tear reservoir, which helps maintain a consistent layer of tears between the lens and the cornea, facilitating the reshaping process and ensuring optimal corneal health.
 

By harnessing the principles of corneal molding and leveraging advanced lens design and materials, Orthokeratology provides a safe and effective way to correct refractive errors without the need for surgical intervention.
 

The Orthokeratology Process

Embarking on the Orthokeratology journey involves a series of steps and follow-up visits to ensure optimal results and maintain the health of your eyes. Your optometrist will conduct a comprehensive eye examination to assess your suitability for Orthokeratology treatment. This evaluation will include measuring your refractive error, examining the shape and health of your cornea, and discussing your vision goals and lifestyle.
 

If deemed a suitable candidate, your eye care professional will take precise measurements of your eyes to design customized Ortho-K lenses tailored to your specific refractive needs. Once the lenses are fabricated, you will receive instructions on how to properly insert, remove, and care for them.
 

Regular follow-up visits are essential to monitor the effectiveness of the treatment, assess any changes in your vision, and ensure the health of your eyes. Proper lens care, hygiene, and regular eye examinations are crucial to ensure the long-term success of the treatment and the health of your eyes.
 

Schedule Your Consultation with Federal Hill Eye Care Today

Orthokeratology offers a unique and innovative approach to vision correction, providing a temporary and non-surgical solution for individuals seeking freedom from daytime corrective eyewear. By leveraging the principles of corneal reshaping, this technique has the potential to improve visual clarity and enhance overall quality of life.
 

If you're considering Orthokeratology, schedule a consultation with our optometrist to explore if these lenses are the right vision correction solution for you. Visit Federal Hill Eye Care at our office in Baltimore, Maryland, or call (410) 752-8208 to book an appointment today.