Orthokeratology originated in the 1960. The safety and effectiveness of the results have been confirmed
How does it work?
The concept behind fitting Ortho-K contact lenses is similar to the orthodontic approach which utilizes braces to straighten children’s teeth. A series of specially designed gas permeable contact lenses are custom fitted to your eyes to reshape the corneas.
The lens material is FDA approved for overnight wear, and allows oxygen to pass through the lens. The cornea thus receives sufficient oxygen for the eye to remain healthy. These lenses gently, safely and temporarily flatten and reshape the center of the cornea, without the removal of any corneal tissue. This method eliminates the myopia, resulting in clear vision through out the day.Refractive surgery is a surgical way of accomplishing this effect. It results in irreversible changes to the shape of the cornea by removing corneal tissue and can have complications.If you suffer from dry eyes, Refractive surgery may be contra-indicated and can aggravate your condition. Ortho-K can be a good option in this case.
The starting point for Ortho-K begins by measuring your eyeglass prescription and mapping the shape of your eye with a corneal topographer. Based on the amount of your prescription to be reversed, and the digital map of your eyes, we custom fit your eyes with Ortho-K contact lenses.
Each night, you wear the lenses during sleep for about eight hours. Upon removal of the lenses in the morning, you will be able to see more clearly without any corrective lenses. Your progress will be monitored with office follow-up visits. Once your eyes reach the desired goal, you will need to wear retainer lenses to maintain your correction.
Is Ortho-K comfortable?
The typical problems experienced by daytime contact lens wearers are foreign body sensation, lens awareness and dryness. These are generally not experienced in overnight wear of Ortho-K lenses.
How long does the Ortho-K treatment take to complete?
Myopia reduction takes place rapidly. It can reduce two to three diopters in one or two weeks. Then, the cornea continues to be reshaped, resulting in further myopia reduction. It takes approximately six months to one year to complete the process, depending on individual differences.