Simultaneous Changes in Astigmatism with Noncycloplegia Refraction and Ocular Biometry in Chinese Primary Schoolchildren.

ABSTRACT:

Purpose

To assess the changing profile of astigmatism in Chinese schoolchildren and the association between astigmatism changes and ocular biometry.

Methods

We examined and followed up 1,463 children aged 6-9 years from Wenzhou, China. We measured noncycloplegic refraction twice each year and tested axial length (AL) and corneal radius of curvature (CRC) annually for two years. We defined clinically significant astigmatism (CSA) as ≤-0.75 diopter (D) and non-CSA astigmatism as ≤0 to >-0.75 D.

Results

Prevalence of CSA at baseline was 22.4% (n = 327) and decreased to 20.3% (n = 297) at the two-year follow-up (P = 0.046). Ninety-two (8.1%) non-CSA children developed CSA. In multiple regression, after adjusting for age, gender, baseline cylinder refr

SUBMITTER: Lin Y 

PROVIDER: S-EPMC6612406 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature