Ocular Development and Refractive Error Changes Among Children and Adolescent - A Longitudinal Study

A Longitudinal Study on Ocular Development and Refractive Error Changes Among children-and Adolescent

The study aims to observe the ocular development and refractive error changes among school children and adolescents

This study aims to observe the refractive error changes of school children and adolescents for 3 years, and to collect data of ocular structural parameters, family history and environmental factors so as to understand the natural course and internal laws of myopia progression.

Inclusion Criteria:

• School children and adolescent at the age of 3(Junior Kindergarten), 6(Grade 1), 9(grade 4), 12(grade 7).
• No allergy to tropicamide or topical anesthetics
• written informed consent is obtained from guardian
• Be willing to cooperate with the relevant ophthalmological examination and complete the questionnaire.

Exclusion Criteria:

• No history of eye diseases
• Receiving or has been received treatment of myopia control such as atropine eye drops, corneal contact lens or myopic glasses
• A history of allergy to topic amide or topical anesthetics
• Have severe systemic disease
• Missing ability to give informed consent