Strong evidencemineral
Zinc for Blurry Vision
Zinc is essential for retinal dehydrogenase activity (converting retinol to retinal for vision), melanin synthesis in the RPE, and antioxidant protection of photoreceptors. The macula contains the highest zinc concentration of any tissue.
How strong is the research?
Strong evidence
Based on a randomised controlled trial (RCT) — the gold standard for establishing cause and effect.
How much to take
15–30 mg
Zinc is concentrated in the retina and choroid. Part of the AREDS2 formula for macular degeneration.
When to take it
Best taken: empty stomach