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CLEAR - Orthokeratology.

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Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association
|March 29, 2021
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Summary
This summary is machine-generated.

Orthokeratology (ortho-k) uses special overnight contact lenses to temporarily correct vision and is increasingly used to slow myopia progression in children. This review covers ortho-k history, methods, safety, and its role in pediatric myopia management.

Keywords:
Contact lens evidence-based academic reports (CLEAR)Corneal reshapingMyopia controlOrthokeratologyRefractive error correction

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Area of Science:

  • Ophthalmology and Optometry
  • Corneal Reshaping Technology
  • Myopia Control

Background:

  • Orthokeratology (ortho-k) involves using specialized rigid gas permeable contact lenses with reverse geometry designs.
  • These lenses are worn overnight to temporarily reshape the cornea, correcting refractive errors like myopia, astigmatism, hyperopia, and presbyopia.
  • Ortho-k is increasingly recognized for its efficacy in slowing myopia progression in children.

Purpose of the Study:

  • To provide a comprehensive review of the practice of orthokeratology.
  • To discuss its history, mechanisms, applications, standard of care, and fitting processes.
  • To evaluate the safety and efficacy of ortho-k, particularly in pediatric myopia management.

Main Methods:

  • Review of historical data and current literature on orthokeratology.
  • Analysis of lens designs, materials, and fitting parameters.
  • Examination of ocular changes, safety data, and non-compliance behaviors associated with ortho-k.
  • Evaluation of efficacy and mechanisms of myopia control in children.

Main Results:

  • Ortho-k effectively corrects refractive errors temporarily and is a viable option for myopia management in children.
  • Ocular changes such as corneal thickness alterations and microcysts can occur.
  • Safety profile is generally favorable with appropriate use and disinfection, though non-compliance risks exist.

Conclusions:

  • Orthokeratology is a well-established method for refractive error correction and a promising approach for myopia control in pediatric populations.
  • Understanding fitting factors, ocular changes, and safety protocols is crucial for successful ortho-k treatment.
  • Further research into mechanisms like peripheral defocus and higher-order aberrations can optimize myopia control strategies.