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Updated: Aug 14, 2026

Three Different Protocols of Corneal Collagen Crosslinking in Keratoconus: Conventional, Accelerated and Iontophoresis
Published on: November 12, 2015
Contemporary orthokeratology
1Department of Optometry, Pacific University, Forest Grove, Oregon 97116, USA. Patpacific@aol.com
Abstract:
Orthokeratology is the temporary reduction or elimination of myopia and astigmatism with rigid contact lenses having a tetra-curve reverse geometry back surface design are currently utilised for this purpose. The essential features of this construction are described. Those clinical characteristics which are favourable, and those which are unfavourable, for the technique of orthokeratology are listed. Reverse geometry lenses can either be fitted empirically or by the use of diagnostic lenses. Videokeratoscopy is of value in identifying corneal distortion induced by problems such as poor centration.
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