Effect of peripheral plus ring diameter and its relationship with pupil diameter on axial elongation in myopic patients after wearing orthokeratology lenses
10.3760/cma.j.cn115989-20211214-00686
- VernacularTitle:离焦环大小及其与瞳孔直径的关系对近视患者配戴角膜塑形镜后眼轴增长的影响
- Author:
Jia YU
1
;
Jing ZHANG
;
Yuehua ZHOU
;
Xiaohui YUAN
;
Qiliang ZHOU
;
Chen LI
Author Information
1. 成都中医药大学眼科学院 成都中医大银海眼科医院，成都 610075
- Keywords:
Myopia;
Therapy;
Orthokeratologic procedures;
Peripheral plus ring;
Axial length;
Myopia defocus
- From:
Chinese Journal of Experimental Ophthalmology
2023;41(8):776-781
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of peripheral plus ring size and its potential associations with pupil diameter (PD) on axial length (AL) elongation in myopic patients after wearing orthokeratology lenses.Methods:A case-control study was conducted.One hundred eyes from 100 myopic patients who underwent orthokeratolokgy lenses fitting were enrolled at Beijing Ming Vision and Ophthalmology from January to June 2020.AL and central corneal thickness (CCT) measurements were obtained using Lenstar LS900 ocular biometry, and steep keratometry (Ks), flat keratometry (Kf) were assessed using the TMS-4 corneal topographer.The patients were divided into larger peripheral plus ring diameter (LPPRD) group consisting of 55 eyes with PD0.05). There was no significant difference in PD at different time points before and after wearing orthokeratology lenses between the two groups ( Fgroup=1.133, P=0.293; Ftime=231.427, P=0.112). Conclusions:The size of peripheral plus ring and its relationship with PD are key factors influencing the AL elongation rate in myopic patients after wearing orthokeratology lenses.With smaller PPRD, patients have slower AL elongation and better myopia control.
