Novel application of multispectral refraction topography in the observation of myopic control effect by orthokeratology lens in adolescents  

作　　者：Ning-Jun Ni Fei-Yan Ma Xiao-Mei Wu Xiao Liu Hong-Yan Zhang Yi-Fei Yu Mei-Chen Guo Sheng-Yong Zhu 

机构地区：[1]Department of Technology,Zigong Yuan-Xin Energy Saving Technology Co.Ltd,Zigong 643030,Sichuan Province,China [2]Department of Ophthalmology,The Second Hospital of Hebei Medical University,Shijiazhuang 050000,Hebei Province,China [3]Department of Ophthalmology,The First People’s Hospital of Zigong,Zigong 643000,Sichuan Province,China [4]Department of Optometry,North Sichuan Medical College,Nanchong 637000,Sichuan Province,China

出　　处：《World Journal of Clinical Cases》2021年第30期8985-8998,共14页世界临床病例杂志

摘　　要：BACKGROUND Myopia,as one of the common ocular diseases,often occurs in adolescence.In addition to the harm from itself,it may also lead to serious complications.Thus,prevention and control of myopia are attracting more and more attention.Previous research revealed that single-focal glasses and orthokeratology lenses(OK lenses)played an important part in slowing down myopia and preventing high myopia.AIM To compare the clinical effects of OK lenses and frame glasses against the increase of diopter in adolescent myopia and further explore the mechanism of the OK lens.METHODS Changes in diopter and axial length were collected among 70 adolescent myopia patients(124 eyes)wearing OK lenses for 1 year(group A)and 59 adolescent myopia patients(113 eyes)wearing frame glasses(group B).Refractive states of their retina were inspected through multispectral refraction topography.The obtained hyperopic defocus was analyzed for the mechanism of OK lenses on slowing down the increase of myopic diopter by delaying the increase of ocular axis length and reducing the near hyperopia defocus.RESULTS Teenagers in groups A and B were divided into low myopia(0 D--3.00 D)and moderate myopia(-3.25 D--6.00 D),without statistical differences among gender and age.After 1-year treatment,the increase of diopter and axis length and changes of retinal hyperopic defocus amount of group A were significantly less than those of group B.According to the multiple linear analysis,the retinal defocus in the upper,lower,nasal,and temporal directions had almost the same effect on the total defocus.The amount of peripheral retinal defocus(15°-53°)in group A was significantly lower than that in group B.CONCLUSION Multispectral refraction topography is progressive and instructive in clinical prevention and control of myopia.

关 键 词：Multispectral refraction topography Myopia Retinal hyperopic defocus Eye axis DIOPTER Orthokeratology lens Frame glasses 

分 类 号：R778.11[医药卫生—眼科]