Role of spherical aberration and coma in orthokeratology for myopia control
10.3980/j.issn.1672-5123.2024.1.17
- VernacularTitle:球差和彗差在角膜塑形镜控制近视中的作用
- Author:
Shoukuan ZHANG
1
;
Qingsheng PENG
1
;
Lei ZHANG
1
Author Information
1. Department of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, China
- Publication Type:Journal Article
- Keywords:
orthokeratology lens;
higher-order aberrations;
spherical aberration;
coma;
myopia;
axial length
- From:
International Eye Science
2024;24(1):88-92
- CountryChina
- Language:Chinese
-
Abstract:
As a highly prevalent global condition, myopia significantly impacts the ocular health of young individuals in China. Orthokeratology lens, as a rigid corneal contact lens, has demonstrated effective control over the progression of myopia; however, its mechanism of action remains incompletely elucidated. As one of the factors influencing visual acuity, higher-order aberrations will undergo marked changes after orthokeratology, with particular emphasis on the alterations in spherical aberrations and coma. The changes in corneal morphology induced by orthokeratology lead to significant positive increase in both spherical aberration and coma. Furthermore, the elevation of spherical aberration and coma demonstrates a negative correlation with the rate of axial length growth following orthokeratology. The interplay among spherical aberration, coma, defocus, accommodation, astigmatism, and pseudo-accommodation may constitute the underlying mechanism governing the control of myopia through orthokeratology.
