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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.
| 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 |
