Myopia’s Long Reach in Japan
Researchers use retail optical data to track refractive change nationwide
Clinical Scorecard: Myopia’s Long Reach in Japan
At a Glance
Category Detail
Condition Myopia Key Mechanisms Progressive refractive error changes from childhood to young adulthood. Target Population Spectacle wearers aged 6–35 years in Japan. Care Setting Optical retail environment.
Key Highlights
Median spherical equivalent stabilized at approximately -3.3 D in men and -3.5 D in women by age 30. High myopia prevalence increased from age 10, with 1.3% of children under 10 already affected. Fastest myopic progression observed at age seven, reaching approximately -1.1 D per year. Significant changes in myopic progression trajectory noted at ages nine and 19 for both sexes. Regional and sex-related differences in myopia patterns were identified. Guideline-Based Recommendations
Diagnosis
Monitor refractive error progression from age six. Management
Consider extending myopia management beyond adolescence. Monitoring & Follow-up
Focus on the surveillance window at six to seven years of age. Risks
Potential overrepresentation of symptomatic or rapidly progressing myopes in spectacle purchasers. Patient & Prescribing Data
Spectacle wearers aged 6–35 years.
Environmental factors may influence myopia progression.
Clinical Best Practices
Regularly assess refractive error in children starting at age six. Be aware of regional variations in myopia prevalence and progression. Related Resources & Content
