👁️ Vision: Lutein, Zeaxanthin and Astaxanthin Against Computer Vision Syndrome
Screens strain the eyes - let's look at which nutrients support them
Many people spend hours in front of screens. This creates strain on the eyes - fatigue, dryness, tension. Some nutrients, such as lutein, zeaxanthin and astaxanthin, support eye health.
These substances concentrate in the retina and protect it. Let's look at their role, sources and how to support vision when working with screens.
How vision works
The retina is a light-sensitive tissue at the back of the eye. In its center is the macula, responsible for sharp vision. It is rich in carotenoids.
Lutein
Lutein is a carotenoid that accumulates in the macula. It acts as a natural filter of blue light.
Zeaxanthin
Zeaxanthin is a related carotenoid, also in the macula. Together with lutein, it protects central vision.
Astaxanthin
Astaxanthin is a powerful carotenoid antioxidant from algae and seafood. It is studied for the eyes and endurance.
Eye fatigue
Working with screens causes eye fatigue, dryness and tension. This is called computer vision syndrome.
Sources and norms
Carotenoids for the eyes and their sources.
| Substance | Norm/day | Sources |
|---|---|---|
| Lutein | 10-20 mg | Spinach, kale, eggs |
| Zeaxanthin | 2-5 mg | Corn, peppers |
| Astaxanthin | 4-12 mg | Salmon, krill, algae |
What matters
How to support vision when working with screens.
Breaks
The 20-20-20 rule reduces eye strain when working with a screen.
Nutrition
Greens, eggs, fish provide lutein, zeaxanthin and astaxanthin.
Lighting and distance
Proper lighting and screen distance reduce the load.
Supplements if needed
With a lack of carotenoids - lutein/zeaxanthin and astaxanthin supplements. More in the article on AREDS2.
Does lutein help with eye fatigue?
Lutein supports retinal health and macular pigment density. It may help with long screen work.
What is the macula?
The central part of the retina responsible for sharp vision. Lutein and zeaxanthin accumulate there.
Does astaxanthin help the eyes?
Astaxanthin is a powerful antioxidant. It is studied for eye support in fatigue and microcirculation.
How much lutein per day?
About 10-20 mg of lutein and 2-5 mg of zeaxanthin per day. Often in combined eye formulas.
Which foods provide lutein?
Spinach, kale, eggs. Fats improve lutein absorption.
Does lutein protect from blue light?
Lutein filters blue light in the retina. This is part of its protective action, but not the only factor.
What is computer vision syndrome?
Eye fatigue, dryness and tension during long screen work. Linked to infrequent blinking and strain.
Are eye supplements needed?
With a lack of carotenoids in the diet, they may help. The basis is a varied diet.
Can astaxanthin replace lutein?
No, they act differently. Lutein is in the macula, astaxanthin is a systemic antioxidant. They are often combined.
When to see a doctor about the eyes?
With sudden vision loss, pain, flashes or prolonged dryness - definitely see an ophthalmologist.