Best vitamins and ingredients for eye health

Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy

Written by FactoWiki Research Team · Reviewed by Supplement Research Editor

Last reviewed: June 2026 · Sources checked: PubMed, NIH, MedlinePlus, NCCIH, FDA

Which eye nutrients have real evidence — the AREDS2 core — and what supplements can't do for your vision.

Key takeaways

The AREDS2 nutrients (lutein, zeaxanthin, zinc, antioxidant vitamins) have real evidence — for existing macular degeneration.
Eye supplements don't sharpen normal vision or replace glasses or an eye exam.
Sudden vision changes, floaters or flashes need urgent eye care.

The evidence here is specific, not general

Eye supplements are unusual because the strongest evidence is narrow and well-defined. The large AREDS2 study found that a particular combination of nutrients can slow the progression of existing age-related macular degeneration in people who already have it at an intermediate stage. That's meaningful — but it does not mean these nutrients sharpen normal eyesight, prevent macular degeneration in healthy eyes, or replace glasses. Keeping that distinction front of mind is the key to judging any eye product.

The AREDS2 core: lutein, zeaxanthin and zinc

The macular carotenoids lutein and zeaxanthin are the best-evidenced eye nutrients; they concentrate in the macula and, with zinc, copper and antioxidant vitamins (C and E), make up the AREDS2 formula. Zinc is effective at the studied dose but harmful in excess over time, which is why AREDS2 actually lowered its zinc level. If macular support is your goal, a product transparent about these specific nutrients and doses is what you want.

Bilberry, omega-3 and the supporting cast

Beyond the core, evidence thins out. Bilberry's anthocyanins are traditionally linked to eye comfort with lighter proof; omega-3 fats have some evidence for dry-eye symptoms rather than macular disease; and antioxidants like grape seed add general protection without eye-specific proof. Many 'eye formulas' stack 20-plus ingredients around the AREDS2 core — breadth that adds cost and marketing more than evidence, especially when doses are hidden.

What eye supplements can't do

No supplement substitutes for an eye exam, and some symptoms are urgent. Sudden vision loss, new floaters or flashes, eye pain, or a curtain across your vision need same-day care. Gradual blur is usually refractive error that glasses fix, not a nutrient gap. And anyone with diabetes needs regular dilated eye exams regardless of supplements. Smokers should avoid beta-carotene-containing eye formulas, which raised lung-cancer risk in trials.

A sensible approach

If you have intermediate macular degeneration, discuss an AREDS2-style formula with your eye doctor — that's where the evidence is. For general 'eye health', a balanced diet rich in leafy greens (a natural source of lutein and zeaxanthin) and regular eye exams do more than most supplements. Treat any eye product as narrow macular support for the right person, alongside professional care.

Food sources and everyday eye habits

Much of what eye supplements provide is available from food and habits. Lutein and zeaxanthin are concentrated in leafy greens like spinach and kale, and a varied diet with these plus omega-3-rich fish covers most of what a general 'eye health' product offers. For screen-related eye strain — which isn't damage but is uncomfortable — the 20-20-20 habit helps: every 20 minutes, look at something about 20 feet away for 20 seconds. And UV-blocking sunglasses protect your eyes outdoors, which no oral supplement does.

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Frequently asked questions

Do eye vitamins improve eyesight?

Not in the everyday sense — the AREDS2 nutrients can slow existing macular degeneration, but supplements don't sharpen normal vision or replace glasses.

Are lutein and zeaxanthin worth taking?

They're the best-evidenced eye nutrients and support macular health, but they won't dramatically improve sight.

Can supplements prevent macular degeneration?

The AREDS2 evidence is for slowing existing intermediate disease, not preventing it in healthy eyes — diet and eye exams matter more.

When should I see an eye doctor?

Promptly for sudden vision loss, new floaters or flashes, eye pain, or if you have diabetes — these need an exam, not a supplement.

This article is general information, not medical advice. See our medical disclaimer, and talk to a qualified healthcare professional about your own situation.