Eye Strain and Screens: Causes, Symptoms, and Solutions

★ Nutritional support for your eyes

Visioptine: eye nutrition for eyes exposed to screens

Eye health

Visioptine

Lutein, zeaxanthin, bilberry, vitamins C and E and zinc: a complete complex designed for eyes strained by screens.

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What is eye strain?

Eye strain, also called visual fatigue or asthenopia, refers to all the discomfort felt when the eyes are used for too long or under poor conditions. It typically appears after a long screen session, prolonged reading, or night driving.

Important point: this is not a disease, but a functional signal. Your eyes are telling you they're working too hard. The discomfort is real but most often reversible: it eases with rest. This is also why it can be greatly improved by changing a few habits, which we'll see below.

Why screens tire your eyes

Three mechanisms combine to tire your eyes in front of a screen.

1. Sustained accommodation

To see clearly up close, the muscle that deforms the lens (accommodation) must contract and remain contracted. On a screen, this near-focus is maintained for hours without relief. Like any muscle under continuous strain, it becomes fatigued, resulting in blurred vision by day's end and difficulty refocusing on distant objects.

2. Reduced blinking

This is the most underestimated factor. Normally, we blink approximately 15 to 17 times per minute. In front of a screen, concentrated, this drops to 4 to 6 times per minute, or a frequency cut in half or by two-thirds. Now blinking spreads the tear film that protects and hydrates the eye surface. Less blinking means the eyedries out : hence the sensations of itching, burning, and dry eyes.

3. Poor conditions

Aggravating factors add up: glare, inadequate lighting, screen too close inadapté, écran poorly positioned, dry air, and especially a possible uncorrected vision problem (the eye strains to compensate, which causes additional fatigue).

Symptoms to recognize

Eye strain manifests itself through a range of signs, which vary from person to person. The most common:

These symptoms are generally benign and reversible : they ease when you rest your eyes. But if they return each day, it's a sign that you need to adjust your environment and habits, or even have your vision checked.

Good habits and the 20-20-20 rule

Good news: eye strain can be prevented and relieved with simple habits. The most well-known, recommended by ophthalmologists, is the 20-20-20 rule.

Why it works: looking into the distance relaxes the accommodation muscle that remains contracted during near vision. It's a genuine rest for the eye. If you forget, set a reminder every 20 minutes at first, until the reflex becomes automatic.

Other essential practices to combine:

Blue light: what we actually know

<<<26>>> Blue light lumière bleue is one of the most discussed and often exaggerated topics. Let's be honest and balanced, because that's what builds trust.

What is established: blue light emitted in the evening by screens disrupts the sleep-wake cycle by delaying melatonin secretion. This is its best-documented effect, and it's a good reason to reduce screen time in the evening.

More uncertain: the idea that it damages the retina. At screen intensities (well below sunlight), the link to damage is not formally established. Eye fatigue in front of a screen comes mainly from accommodation and reduced blinking, not specifically from blue light. As for blue light blocking glasses, they provide relief for some sensitive individuals, but without demonstrated widespread benefits: they do not replace good practices or proper vision correction.

Eye nutrition: lutein, zeaxanthin, zinc

Beyond gestures, <<<2>>> nutrition <<<3>>> plays a fundamental role in eye health, particularly that of the <<<4>>> macula <<<5>>> , the central area of the retina responsible for precise vision. <<<6>>> Lutein and zeaxanthin <<<7>>> These are two <<<8>>> carotenoids <<<9>>> (antioxidant pigments) naturally concentrated in the macula, where they form the macular pigment. Their physiological role: <<<10>>> filter some of the high-energy light <<<11>>> and protect retinal cells from oxidative stress. The body does not produce them: they come from diet (leafy green vegetables, corn, eggs) or from supplementation. <<<12>>> On the specific topic of screens, the data are encouraging. According to PubMed, a randomized double-blind placebo-controlled trial by Lopresti and Smith 2025, published in Frontiers in Nutrition, followed 70 heavy screen users (more than 6 hours per day) supplemented with <<<13>>> 10 mg of lutein and 2 mg of zeaxanthin <<<14>>> for 6 months. Result: compared to placebo, improvements on several objective measures of <<<15>>> dry eye <<<16>>> and visual recovery (Schirmer test, tear film break-up time, photostress recovery), even though subjective questionnaires showed no clear difference (<<<17>>> DOI: 10.3389/fnut.2025.1522302 <<<18>>> ). Promising results, to be confirmed, that justify the interest in these two carotenoids. <<<19>>> Zinc, vitamins C and E, bilberry <<<20>>> Other nutrients complement this approach, with health claims recognized by EFSA: <<<21>>> Zinc <<<22>>> contributes to the maintenance of normal vision <<<23>>> (authorized claim). It participates in the functioning of visual cells and the retina. <<<24>>> Vitamins <<<25>>> C and E contribute to protect cells against oxidative stress <<<26>>> (authorized claims), useful for tissues as exposed to light as those of the eye. <<<27>>> Bilberry <<<28>>> , rich in anthocyanins, is traditionally associated with visual comfort and microcirculation. <<<29>>> This is precisely the logic of our <<<30>>> Visioptine <<<31>>> complex, which brings together <<<32>>> lutein, zeaxanthin, bilberry, vitamins C and E and zinc <<<33>>> in a formula designed for eyes strained by screens. To combine with good habits, not to replace them. For vision and skin, <<<34>>> vitamin A (retinol) <<<35>>> also plays a role in maintaining normal vision. <<<36>>> Ocular nutrition <<<37>>> Support your eyes against screens <<<38>>> Visioptine brings together lutein, zeaxanthin, bilberry, vitamins C and E and zinc: a comprehensive complex to support your eye health daily, in addition to good habits and a diet rich in green vegetables. <<<39>>> Discover Visioptine → <<<40>>> nutrition joue un rôle de fond dans la santé des yeux, en particulier de la macula, la zone centrale de la rétine responsable de la vision précise.

La lutéine et la zéaxanthine

Ce sont deux caroténoïdes (pigments antioxydants) naturellement concentrés dans la macula, où ils forment le pigment maculaire. Leur rôle physiologique : filtrer une partie de la lumière à haute énergie et protéger les cellules de la rétine du stress oxydatif. L'organisme ne les fabrique pas : ils proviennent de l'alimentation (légumes verts à feuilles, maïs, œufs) ou d'une complémentation.

Sur le sujet précis des écrans, les données sont encourageantes. Selon PubMed, un essai randomisé en double aveugle contre placebo de Lopresti et Smith 2025, publié dans Frontiers in Nutrition, a suivi pendant 6 mois 70 gros utilisateurs d'écrans (plus de 6 heures par jour) supplémentés en 10 mg de lutéine et 2 mg de zéaxanthine. Résultat : par rapport au placebo, des améliorations sur plusieurs mesures objectives de la sécheresse oculaire et de la récupération visuelle (test de Schirmer, temps de rupture du film lacrymal, récupération au photo-stress), même si les questionnaires subjectifs n'ont pas montré de différence nette (DOI : 10.3389/fnut.2025.1522302). Des résultats prometteurs, à confirmer, qui justifient l'intérêt porté à ces deux caroténoïdes.

Le zinc, les vitamines C et E, la myrtille

D'autres nutriments complètent l'approche, avec des allégations de santé reconnues par l'EFSA :

• Le zinc contribue au maintien d'une vision normale (allégation autorisée). Il participe au fonctionnement des cellules visuelles et de la rétine.
• Les vitamines C et E contribuent à protéger les cellules contre le stress oxydatif (allégations autorisées), utile pour des tissus aussi exposés à la lumière que ceux de l'œil.
• La myrtille, riche en anthocyanines, est traditionnellement associée au confort visuel et à la microcirculation.

C'est précisément la logique de notre complexe Visioptine, qui réunit lutéine, zéaxanthine, myrtille, vitamines C et E et zinc dans une formule pensée pour les yeux sollicités par les écrans. À associer aux bons gestes, pas à leur place. Pour la vision et la peau, la vitamine A (rétinol) joue aussi un rôle dans le maintien d'une vision normale.

When to see an ophthalmologist

Eye strain is usually benign. But certain signs should prompt you to consult an ophthalmologist, who will provide the correct diagnosis.

Most importantly, remember this: a very common cause of eye strain is an uncorrected or poorly corrected vision disorder (myopia, hyperopia, astigmatism, early presbyopia) or outdated eyeglass correction. A simple, up-to-date eye exam often resolves much of the problem. Be sure to tell your eye care professional how many hours per day you spend on screens: they can adjust your correction for intermediate vision (computer distance).

Frequently asked questions

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