Early Screening and Intervention for Anisometropia in Preschool Children: A Significance Analysis

Abstract

The preschool years, spanning from 3 to 6 years of age, represent a pivotal and irreversible critical period for the maturation of human visual function. During this window, the ocular structures and neural pathways underlying vision undergo rapid development and plastic changes, making the visual system highly susceptible to the influence of environmental and physiological factors. Anisometropia, a prevalent refractive disorder characterized by an asymmetric refractive state between the two eyes, has emerged as a major threat to the normal visual development of preschool children. If left undiagnosed and without timely intervention, this condition can trigger a cascade of visual impairments, including amblyopia, binocular vision dysfunction, stereoscopic vision loss, and even long-term reading difficulties and learning disabilities, which can profoundly impact a child’s academic performance, motor skills, and overall quality of life in adulthood. This paper systematically elaborates on the definition, clinical classification, and epidemiological characteristics of anisometropia in preschool children, and further explores the current status and application value of various early screening methods, including population-based screening tools and clinical diagnostic gold standards. It also formulates targeted and hierarchical intervention strategies based on the severity of anisometropia, encompassing optical correction, amblyopia training, and long-term follow-up management. Additionally, this study conducts an in-depth analysis of the far-reaching clinical and social significance of standardized early screening and scientific intervention for this condition. The research findings confirm that universal and standardized early refractive screening can significantly improve the early detection rate of anisometropia in preschool children, and individualized intervention measures, such as timely full optical correction combined with personalized visual training, can effectively improve the visual acuity of the affected eye, restore binocular vision balance, and drastically reduce the incidence of irreversible amblyopia and abnormal visual development. Based on these conclusions, this paper proposes that refractive screening for anisometropia should be incorporated into the routine health examination system for preschool children in China, a standardized multi-disciplinary management system involving families, kindergartens, and medical institutions should be established, and precise and individualized intervention measures should be implemented to build a comprehensive defense line for the visual health of preschool children and lay a solid foundation for their healthy growth and future development.