What question did this study set out to answer?

To review and evaluate the evidence for eight hypothesized environmental and physiological mechanisms through which spending time outdoors protects against childhood myopia.

November 13, 2019British Journal of Ophthalmology

How does spending time outdoors protect against myopia? A review

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Authors

GLGareth Lingham DMDavid A. Mackey RLRobyn Lucas

Discussion

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Overview

Review shows bright light exposure protects against myopia in children, indicating opportunities for targeted optical and environmental interventions.

Key Points

To review and evaluate the evidence for eight hypothesized environmental and physiological mechanisms through which spending time outdoors protects against childhood myopia.
Synthesized existing scientific evidence across eight proposed outdoor protective factors: ambient light intensity, peripheral defocus, vitamin D levels, light chromatic spectrum, physical activity, circadian rhythm entrainment, near work reduction, and high spatial frequency energies.
Exposure to brighter ambient light demonstrated strong, solid evidence for reducing the risk of developing myopia.
Peripheral defocus, light spectrum variations, circadian rhythm synchronization, and high spatial frequency characteristics represent plausible mechanisms but currently lack conclusive human evidence.
Elevated vitamin D levels, increased physical activity, and reduced near work appear unlikely to mediate the protective relationship between outdoor time and myopia.

Cite This Study

Lingham et al. (2019) studied this question.

synapsesocial.com/papers/69d8164e61e2ce1627d18c62 https://doi.org/10.1136/bjophthalmol-2019-314675

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November 13, 2019British Journal of Ophthalmology

How does spending time outdoors protect against myopia? A review

View Full Paper

Ask AI

Bookmark

Authors

GLGareth Lingham DMDavid A. Mackey RLRobyn Lucas

Discussion

Member takes

Overview

Review shows bright light exposure protects against myopia in children, indicating opportunities for targeted optical and environmental interventions.

Key Points

To review and evaluate the evidence for eight hypothesized environmental and physiological mechanisms through which spending time outdoors protects against childhood myopia.
Synthesized existing scientific evidence across eight proposed outdoor protective factors: ambient light intensity, peripheral defocus, vitamin D levels, light chromatic spectrum, physical activity, circadian rhythm entrainment, near work reduction, and high spatial frequency energies.
Exposure to brighter ambient light demonstrated strong, solid evidence for reducing the risk of developing myopia.
Peripheral defocus, light spectrum variations, circadian rhythm synchronization, and high spatial frequency characteristics represent plausible mechanisms but currently lack conclusive human evidence.
Elevated vitamin D levels, increased physical activity, and reduced near work appear unlikely to mediate the protective relationship between outdoor time and myopia.

Cite This Study

Lingham et al. (2019) studied this question.

synapsesocial.com/papers/69d8164e61e2ce1627d18c62 https://doi.org/10.1136/bjophthalmol-2019-314675

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