Optometry and vision science : official publication of the American Academy of Optometry
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Comparative Study
Posterior corneal shape changes in myopic overnight orthokeratology.
To evaluate changes in the shape of the posterior cornea at the end of the day based on anterior corneal topography and corneal thickness during myopic overnight orthokeratology (OK) over 14 nights' wear of reverse geometry gas-permeable (GP) contact lenses. ⋯ The results of this study support the current hypothesis that the OK refractive effect is achieved primarily through remodeling of the anterior corneal layers, without overall corneal bending.