Abstract

The incidence of myopia is increasing especially in teenagers, therefore the widespread technology, orthokeratology is worthy discussing. This article describes eye vision and the shape of the cornea on the basis of topography check and Fourier analysis model in clinical application treated with orthokeratology for one year. All patients underwent ophthalmic examination to exclude ocular disease and contraindications to lens. And the all patients received orthokeratology at night with corneal plastic glasses. The uncorrected visual acuity and optometry were examined, and the mean curvature of the anterior and posterior surfaces of the cornea were also measured to obtain the Fourier index each time in the Fourier analysis. After orthokeratology for one year, we found that the position of the thinnest cornea was not significantly shifted. But Fourier analysis shows that corneal plasticizer has different correction effects on minimum spherical radius and spherical eccentricity, as well as peripheral regular astigmatism and center regular astigmatism, which may be one of the main reasons to alleviate the development of myopia.