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What is Orthokeratology?

A common comparison links orthokeratology to the eye as braces are to the teeth. First approved by the FDA in 2002, orthokeratology is a non-invasive technique used to reshape the corneal surface, and in doing so, treat mild cases of myopia and astigmatism. To do so patients are given special contact lenses that are rigid in structure and gas permeable. By wearing these contact lenses overnight their corneas are reshaped and their vision is corrected for during the daytime. Orthokeratology can therefore be used to slow down the progression of myopia and temporarily put a halt to it. A key word in this is temporarily, because upon ceasing to use the provided contact lenses, the cornea will revert back to its original shape and the symptoms of myopia will continue. Like many other treatments, orthokeratology comes with its own risks and side effects. Less pressing side effects include irritation and an increased possibility of eye infections. More concerning side effects include corneal edema (swelling), corneal staining and lens binding. Considering all that has been discussed, it is important to note that successive treatment with orthokeratology will vary with the individual. Further investigation on the topic is advised to determine if orthokeratology would be the right treatment for you. 



  1. “Orthokeratology Guide: Side Effects, Risks, and More.” NVISION Eye Centers, 4 Aug. 2021,
  2. Liu, Yue M, and Peiying Xie. “The Safety of Orthokeratology--A Systematic Review.” Eye & Contact Lens, Eye & Contact Lens: Science & Clinical Practice, Jan. 2016,,changes%20of%20corneal%20biomechanical%20properties
  3. "Myopicare | News | Are Ortho K Lenses Safe?." N.p., 2022. Web. 13 Oct. 2022 .,lenses%2C%20including%20Ortho%2DK
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