Nutrients for the Eyes: Lutein, Zinc & Co.

The first glance at your phone in the morning, screens all day long, and one more chapter of a book in the evening: our eyes are arguably the most demanded of all our sense organs. No wonder the search for the right "eye nutrients" is booming. Here is the clear answer first:

For the maintenance of normal vision, Vitamin A, riboflavin (B2) and zinc are linked to authorised claims in the EU - complemented by the omega-3 fatty acid DHA at 250 mg per day. Lutein and zeaxanthin do sit naturally in the retina, but here (in the absence of an authorised claim) they contribute only as part of a vegetable-rich diet. What that means in everyday life is what you'll read now.

The key points at a glance

• For normal vision: Vitamin A, riboflavin (B2), zinc - plus DHA from 250 mg/day.
• Lutein and zeaxanthin accumulate in the macula (the yellow spot) of the retina; there are no authorised claims for them - we present them neutrally.
• A colourful, vegetable-rich diet supplies most of these nutrients on its own.
• For persistent vision problems: always have them checked by an eye doctor.

How the eye uses nutrients - a brief look inside

Vision begins in the photoreceptors of the retina. This is where rhodopsin sits, the visual pigment for low-light vision - and its core building block is Vitamin A (more precisely: retinal). When light hits it, the molecule changes its shape and triggers the visual signal; afterwards it has to be regenerated. This cycle continuously consumes Vitamin A. Zinc is closely linked because it is involved in Vitamin A metabolism and transport - which is why the two almost always appear together in eye supplements. Riboflavin (B2) keeps the energy metabolism of the metabolically active retinal cells running and protects against oxidative stress. In the macula, the point of sharpest vision, the yellow pigments lutein and zeaxanthin are additionally stored, giving the yellow spot its name.

Which nutrients are connected with eyesight?

Under EU Regulation 432/2012, only a few nutrients may be explicitly linked to eyesight - in the prescribed wording. Notably, it always concerns the maintenance of normal vision, not an improvement in visual acuity.

This distinction is more than a legal subtlety: it explains why no reputable supplement promises to "improve" visual acuity or make glasses unnecessary. Refractive errors such as short-sightedness or long-sightedness arise from the shape of the eyeball and lens and cannot be changed through diet. The nutrients mentioned act at a different point - they secure the basic biochemical functions that vision requires. Anyone who keeps this expectation in mind will be neither disappointed by a supplement nor misled by exaggerated advertising.

Vitamin A - the classic for the eyes

Vitamin A contributes to the maintenance of normal vision. The body obtains it directly from animal foods (retinol) or produces it from beta-carotene, the provitamin A from plants. Orange-red and dark-green vegetables are especially rich in beta-carotene:

• Carrots, sweet potatoes, pumpkin (rich in beta-carotene)
• Spinach, kale, lamb's lettuce
• Eggs and dairy products (as retinol)
• Apricots and mango

Practical tip: beta-carotene is fat-soluble - a dash of oil over your carrot salad noticeably improves its absorption. How much Vitamin A you need is covered in Vitamin A: effects and daily requirement.

Zinc and riboflavin - small helpers, big job

Zinc contributes to the maintenance of normal vision and is involved in Vitamin A metabolism - the two work hand in hand. Good sources: pumpkin seeds, oats, cheese, lentils, meat. More in Zinc: effects, daily requirement and deficiency. Riboflavin (B2) likewise contributes to the maintenance of normal vision and is found in dairy products, eggs, wholegrain, almonds and mushrooms. Because it is light-sensitive, such foods should be stored in the dark. An overview is given in B vitamins at a glance (B1 to B12).

DHA, lutein and zeaxanthin - kept clearly apart

Unlike lutein, the omega-3 fatty acid DHA has an authorised claim: from 250 mg per day it contributes to the maintenance of normal vision. DHA is found in oily sea fish (salmon, mackerel, herring) and - from plants - in microalgae oil. Anyone who eats little fish can supplement it specifically; details in Covering omega-3 vegan with algae oil and Omega-3: for whom is it worthwhile?.

Lutein and zeaxanthin are natural plant pigments (xanthophylls) that accumulate in the macula and give it its yellow colouring. No health claims are authorised for them in the EU - we describe them neutrally: they occur in kale, spinach, corn, bell pepper and egg yolk and, for supplements, are mostly obtained from marigold flowers. More in Lutein & zeaxanthin for the eyes.

What research is investigating

The role of Vitamin A in visual purple is well-established textbook knowledge. Around lutein and zeaxanthin, active research is looking at how these pigments accumulate in the macula and whether a targeted intake influences pigment density - much here is still open and not authorised as a claim in the EU. For DHA and the retina, which is rich in this fatty acid, the authorised claim already exists. And around long screen time, researchers are studying the symptom complex of "digital eye strain" - here the focus is on blink rate, breaks and lighting, not individual supplements.

Screen time and everyday life

Tired, dry eyes after long screen work are usually a behavioural issue, not a nutrient one. Helpful measures are the 20-20-20 rule (every 20 minutes, look 20 seconds into the distance), conscious blinking, drinking enough and pleasant lighting. A vegetable-rich diet usually supplies the mentioned nutrients in sufficient amounts. Especially for everyday life at the monitor, Nutrients for the eyes at the screen and Nutrients for office & screen work are worth a read. On a purely plant-based diet, it's worth looking at Nutrients for vegans.

Honestly assessed

Established and authorised are the contributions of Vitamin A, riboflavin, zinc and DHA to the maintenance of normal vision. Not substantiated is that a supplement improves visual acuity or influences eye diseases. Anyone who eats very one-sidedly, with little vegetables or hardly any fish, may be more likely to have gaps in these nutrients - whether supplementation makes sense depends on the individual diet. For orientation, see Dietary supplements: sensible or a waste of money?. For persistent vision problems, the way leads to an eye doctor.

Combine nutrients cleverly: fat, light and preparation

If you want to cover your eye nutrients through your diet, you can get a lot out of a few simple principles. Beta-carotene (the precursor of Vitamin A) and the carotenoids lutein and zeaxanthin are fat-soluble - in combination with a little fat they are absorbed considerably better. An oil dressing over the salad, a few nuts with raw vegetables or a dollop of yoghurt with the carrots is already enough. Riboflavin (B2), on the other hand, is water-soluble and light-sensitive, which is why the corresponding foods should be stored in the dark and not soaked for too long. And a simple rule of thumb for shopping: the more colourful the plate, the broader the spectrum of plant compounds. Green, yellow, orange and red together cover most of the nutrients mentioned here.

For whom the topic matters most

In principle, everyone benefits from a good supply - regardless of age. It becomes more pronounced with certain lifestyles: anyone who eats very one-sidedly, has hardly any vegetables on their plate or rarely eats oily fish is more likely to have gaps in Vitamin A, zinc and DHA. On a purely plant-based diet, it's worth paying specific attention to Vitamin A (via beta-carotene from colourful vegetables) and DHA (via microalgae oil instead of fish). Those who spend a lot of time at the screen should also think less about a particular supplement and more about the interplay of diet, breaks and light. Whether supplementation fits in an individual case always depends on the individual diet - when in doubt, a look at your own weekly diet or a conversation with a doctor helps more than any blanket recommendation.

Matching products from Scheunengut

In the category Eyes, Mouth & Teeth we bundle typical eye nutrients - for example with Lutein and Zeaxanthin. If you want to supplement specifically, you'll find what you need in Vitamin A and Zinc. All products are lab-tested and made in Germany - so you know exactly what's inside.

Frequently asked questions (FAQ)

Which vitamins are good for the eyes?

In the EU, Vitamin A, riboflavin (B2) and zinc are linked to the maintenance of normal vision, along with the omega-3 fatty acid DHA from 250 mg per day. Vitamin A is a building block of the visual pigment rhodopsin, and zinc is involved in Vitamin A metabolism. A colourful, vegetable-rich diet supplies most of them on its own.

Do lutein and zeaxanthin help the eyes?

Lutein and zeaxanthin accumulate naturally in the macula (the yellow spot) of the retina. In the EU, however, no health claims are authorised for them, which is why we describe them neutrally. They are found in kale, spinach, corn, bell pepper and egg yolk. Their precise effect is being researched.

What helps with tired eyes at the screen?

Above all, behaviour: the 20-20-20 rule (every 20 minutes, look 20 seconds into the distance), conscious blinking, drinking enough and pleasant, glare-free lighting. Nutrients maintain normal vision but do not replace breaks. For persistent complaints, please have them checked by an eye doctor.

Should vegans pay attention to certain eye nutrients?

Yes. Vitamin A can be covered via beta-carotene from colourful vegetables, and DHA can be obtained from plants via microalgae oil, since it is otherwise found mainly in oily fish. Anyone who eats little vegetables or fish is more likely to have gaps here.