Changes on the corneal thickness and curvature after orthokeratology

Iwane Mitsui; Yoshiya Yamada

doi:10.1117/12.529925

13 July 2004 Changes on the corneal thickness and curvature after orthokeratology

Iwane Mitsui, Yoshiya Yamada

Proceedings Volume 5314, Ophthalmic Technologies XIV; (2004) https://doi.org/10.1117/12.529925
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

Abstract

To evaluate the corneal thickness and curvature changes after Orthokeratology contact lens wear, using the ORBSCAN II corneal topography system, corneal thickness and corneal curvature were measured on one hundred and twenty eyes of sixty patients before and after wearing the custom rigid gas permeable contact lenses for Orthokeratology. The contact lenses were specially designed for each eye. The subjects wore the orthokeratology lenses for approximately Four hours with their eyes closed. The corneal thickness of the subjects was increased on fifty-five eyes at not only the peripheral zone but also the center of the cornea. The average increase of central and peripheral corneal thickness was 18 micrometer and 22micrometer, respectively. The mean anterior curvature of corneal surface changed 1.25D. The mean posterior curvature of corneal endothelium side changed 0.75D.

Citation Download Citation

Iwane Mitsui and Yoshiya Yamada "Changes on the corneal thickness and curvature after orthokeratology", Proc. SPIE 5314, Ophthalmic Technologies XIV, (13 July 2004); https://doi.org/10.1117/12.529925

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