Astaxanthin (Eye Health) Research & Evidence

SupplementScience.ai Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026

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Evidence Level

Moderate

Astaxanthin has a growing body of clinical evidence for eye health. Multiple Japanese RCTs demonstrate benefits for accommodative function and eye fatigue at 6-12 mg/day. Its unique ability to cross the blood-retinal barrier, combined with exceptional antioxidant potency, makes it a compelling complement to macular carotenoids like lutein and zeaxanthin. Long-term AMD prevention studies are still lacking.

Evidence by Condition

Condition	Studied Dose	Evidence
Eye fatigue / screen strain	6 mg daily	Moderate
Retinal blood flow	12 mg daily	Moderate
General eye antioxidant support	4-6 mg daily	Moderate

Full Astaxanthin (Eye Health) Guide

References

Nagaki Y, Hayasaka S, Yamada T, et al. (2002). Effects of astaxanthin on accommodation, critical flicker fusion, and pattern visual evoked potential in visual display terminal workers. Journal of Traditional Medicines.
Saito M, Yoshida K, Saito W, et al. (2012). Astaxanthin increases choroidal blood flow velocity. Graefe's Archive for Clinical and Experimental Ophthalmology. DOI PubMed