March 3, 2026Open Access

Objective Monitoring of Tablet Use–Related Optical Exposure and Its Association With Axial Length in Preschool Children: Cross-Sectional Intelligent Monitoring Study

Key Points

Shorter axial length is linked to higher ambient illuminance during tablet use, indicating a protective effect.
Screen brightness has a nonlinear correlation with axial elongation, suggesting careful monitoring is needed.
The observational analysis emphasizes the role of environmental lighting and device settings in visual health outcomes.
These findings support the development of guidelines aimed at optimizing safe digital device use for preschoolers.

Abstract

Higher ambient illuminance during tablet use is associated with shorter axial length in preschoolers, whereas screen brightness exhibits a nonlinear effect on axial elongation. This study highlights the importance of optimizing both environmental lighting and device settings to protect visual health in young children, providing empirical support for guidelines on safe digital device use and ambient lighting conditions in early childhood.

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Authors

Yidong Zhu

Fudan University

Hao Chen

Sinopec (China)

Senlin Lin

Tongji University

Journals

SHILAP Revista de lepidopterología

JMIR Human Factors

Actions

Institutions

Fudan University

Tongji University

Shanghai Public Health Clinical Center

References and Citations

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Building similarity graph...

Analyzing shared references across papers

Objective Monitoring of Tablet Use–Related Optical Exposure and Its Association With Axial Length in Preschool Children: Cross-Sectional Intelligent Monitoring Study

Key Points

Abstract

Citation Network

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Discussion

Authors

Journals

Actions

Institutions

References and Citations

Citation Network

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Discussion

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