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Updated: Jun 18, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients

Published on: March 29, 2022

Contrast Polarity Differences Across Indoor Subscenes and Outdoor Visual Environments: Implications for Myopia Risk.

Zhiqiang Ye1, Huayu Zhang1, Yifan Luo1

  • 1National Clinical Research Centre for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, China.

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
|June 16, 2026
PubMed
Summary
This summary is machine-generated.

Natural environments have higher negative contrast (OFF) proportions than indoor settings. Enhancing indoor negative contrast may help prevent myopia, a common vision disorder.

Keywords:
Contrast polarityMyopiaON/OFF pathwayVisual environment

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Last Updated: Jun 18, 2026

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Measuring the Behavioral Effects of Intraocular Scatter
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Measuring the Behavioral Effects of Intraocular Scatter

Published on: February 18, 2021

Area of Science:

  • Vision science
  • Environmental optics
  • Public health

Background:

  • Outdoor exposure is linked to myopia protection, but spatial frequency alone doesn't fully explain myopia risk.
  • Contrast polarity differences between indoor and outdoor environments are under-explored in relation to myopia.
  • Understanding visual environment characteristics is crucial for myopia prevention strategies.

Purpose of the Study:

  • To investigate contrast polarity differences between indoor and natural environments.
  • To quantify local contrast polarity (ON/OFF proportions) across various spatial frequencies in different scene types.
  • To explore the impact of optical interventions on indoor contrast polarity.

Main Methods:

  • Analysis of 53,620 images from diverse scene databases (MIT Indoor Scenes, Mapillary Vistas, Places365).
  • Categorization of images into natural, urban, and indoor environments with sub-classifications.
  • Quantification of local contrast polarity using Difference-of-Gaussians filtering at 0.5, 2, and 6 cycles per degree (cpd).

Main Results:

  • Natural environments showed significantly higher negative contrast (OFF) proportions across all tested spatial frequencies compared to indoor environments.
  • Indoor environments, particularly specific subscenes like nurseries and bathrooms, exhibited lower OFF proportions.
  • Contrast-reducing optical interventions increased indoor OFF proportions at low spatial frequencies, with diminishing effects at higher frequencies.

Conclusions:

  • Built environments, especially certain indoor settings, possess lower negative contrast proportions than natural environments.
  • The findings suggest that enhancing low-frequency negative contrast in indoor environments could be a viable strategy for myopia prevention.
  • These insights can inform public health initiatives aimed at mitigating myopia prevalence.