Vitamin D May Reflect Myopia Risk

Narrative review linked lower vitamin D levels to greater myopia risk and higher omega-3 intake to lower risk, though outdoor exposure may explain the vitamin D association.

By
Andrea Surnit
May 26, 2026
4 min

Conexiant

At a Glance

Category	Detail
Condition
Key Mechanisms	Association of lower serum vitamin D levels with higher myopia prevalence and longer axial length; omega-3 PUFAs as a probable protective factor; vitamin D may reflect outdoor exposure rather than act as an independent causal factor.
Target Population
Care Setting

Key Highlights

Lower serum vitamin D levels linked to higher myopia prevalence.
Omega-3 PUFAs show strongest evidence as a protective factor against myopia.
No direct causal role established for vitamin D in myopia development; observational nature of studies limits causal inference.
Outdoor exposure consistently associated with lower myopia risk.
Most evidence is observational, limiting causal inference.

Guideline-Based Recommendations

Diagnosis

No specific recommendations for vitamin D testing in myopia.

Management

Nutritional interventions not supported as standalone strategies for myopia control.

Monitoring & Follow-up

Interpret nutrition within a broader behavioral and environmental framework.

Risks

Potential misinterpretation of vitamin D's role in myopia due to observational nature of studies.

Patient & Prescribing Data

Focus on outdoor activity and overall lifestyle factors rather than solely on vitamin D supplementation.

Clinical Best Practices

Encourage outdoor activities to reduce myopia risk.
Consider overall metabolic health and lifestyle factors in myopia management, including behavioral and environmental influences.