Friday, February 02, 2007

Corneal Refractive Therapy (Orthokeratology)

Source: Cornea. 25 Supplement 1:S59-S63, December 2006.
Hiraoka, Takahiro MD; Okamoto, Fumiki MD; Kaji, Yuichi MD; Oshika, Tetsuro MD

Conclusion: Corneal irregular astigmatism and higher-order aberrations significantly increased even in clinically successful orthokeratology, and the increases correlated with the magnitude of myopic correction. A large myopic correction by orthokeratology should be avoided to not decrease corneal optical quality.


  1. Were these patients complaining or was this just a test to see what the machine can identify? Also, were the abberrations tested before and after? Were any abberrations improved? Does the machine measure a patient's vision or just rays of light that enter and exit the eye? What was the Snellen acuity? Were any comparative studies done to demonstrate the procedures relationship to those abberrations caused by other vision correction procedures including spectacle correction and soft contact lens wear?

    If you are an optometrist posting this you owe it to the optometric community (and the public in general)to provide some relationship to other vision correction abberration producing results to put this article in perspective.

  2. There are many benefits that should be recognized. Orthokeratology has great advantages for children. Since it is non-surgical it can be done on those who are under 18. This means that kids can enjoy sports, school etc. without the need for correction through the day. No more lost glasses or torn contacts.
    Furthermore, children who have parents with high myopia are at risk of developing high myopia also. New studies show that orthokeratology can slow this progression. In other words, when a child reaches adulthood their nearsighted prescription could be far less than it would have been without the procedure. Clear View Eye Care


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