Design and methodology of the Shanghai child and adolescent large-scale eye study (SCALE).

ABSTRACT:

Importance

Nearly half of children suffering vision impairment reside in China with myopia accounting for the vast majority.

Background

To describe the design and methodology of the Shanghai Child and Adolescent Large-scale Eye Study (SCALE).

Design

The SCALE was a city wide, school-based, prospective survey.

Participants

Children and adolescents aged 4-14 years from kindergarten (middle and senior), primary schools and junior high schools of all 17 districts and counties of the city of Shanghai, China were examined in 2012-2013.

Methods

Each enrolled child underwent vision assessment (distance visual acuity; uncorrected and with corrective device if worn) and their parent/carer completed a questionnaire designed to elicit risk factors associated with my

SUBMITTER: He X 

PROVIDER: S-EPMC6032906 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature