Changes in Peripheral Refractive Profile after Orthokeratology for Different Degrees of Myopia.

AbstractPurpose: The purpose of this study was to evaluate the effect of orthokeratology for different degrees of myopia correction in the relative location of tangential (FT) and sagittal (FS) power errors across the central 70° of the visual field in the horizontal meridian.Methods: Thirty-four right eyes of 34 patients with a mean age of 25.2 ± 6.4 years were fitted with Paragon CRT (Mesa, AZ) rigid gas permeable contact lenses to treat myopia (−2.15 ± 1.26D, range: −0.88 to −5.25D). Axial and peripheral refraction were measured along the central 70° of the horizontal visual field with the Grand Seiko WAM5500 open-field auto-refractor. Spherical equivalent (M), as well as tangential (FT) and sagittal power errors (FS) were obtained. Analysis was stratified in three groups according to baseline spherical equivalent: Group 1 [MBaseline = −0.88 to −1.50D; n = 11], Group 2 [MBaseline = −1.51 to −2.49D; n = 11], and Group 3 [MBaseline = −2.50 to −5.25D; n = 12].Results: Spherical equivalent was significantl...