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Influence of overnight orthokeratology lens fitting decentration on corneal topography reshaping

Eye and Vision 2018年第1期5卷 48-58页

作者： Jiaojie Chen Wei Huang Rong Zhu Jun Jiang Yiyu Li School of Optometry and Ophthalmology WenZhou Medical UniversityWenZhouZheJiangChina Eye Hospital of Wenzhou Medical University 270 West Xueyuan RoadWenzhouZhejiang 325027China

Background:This retrospective study was designed to investigate the sole influence of orthokeratology(OK)lens fitting decentration on the Zernike coefficients of the reshaped anterior corneal ***:This study comprised a review of 106 right eyes and measurements of corneal topography both before OK and at 1-month follow-up visit.A routine was designed to calculate local corneal surface astigmatism and assist the determination of OK lens fitting decentration from pupil *** pupil-centered corneal Zernike coefficients of baseline(PCCB)and post-treatment(PCCP)were ***,the OK-lens-centered corneal Zernike coefficients of post-treatment(OCCP)were also calculated and considered as the presumptive ideal fitting group without *** between lens fitting decentration and the change of Zernike coefficients including(PCCP−PCCB)and(PCCP−OCCP)were ***:Patients with a mean age of 11±2.36 years old had an average spherical equivalent refractive error of−3.52±1.06 D before *** month after treatment,OK lens fitting decentration from pupil center was 0.68±0.35 *** of 3rd-order(Plens fitting ***,no significant difference was observed in C^(0)_(2)(P>0.05).For the high order corneal Zernike coefficients in(PCCP–OCCP),radial distance of decentration was correlated with C^(−1)_(3)(r=−0.296,Pdecentration was significantly correlated with C^(1)_(3)(r=0.901,Pdecentration was significantly correlated with C^(−1)_(3)(r=0.904,Plens fitting decentration within 1.5 mm hardly influenced the change of corneal spherical power for myopia correction,but significantly induced additional corneal

关键词： Orthokeratology lens fitting decentration Zernike coefficients Contact lens Corneal topography

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