How does screen time really affect eye health?
Dr. med. Michaela Ramsauer
May 29, 2026
3 min
Whether in the office, on the move or at home - screens are a constant part of our everyday lives. Many people spend several hours a day in front of a laptop, smartphone or tablet. But what does this actually mean for our eyes? Does screen time make our eyes permanently worse or is there more to it than that?
Why screen work strains the eyes
When concentrating on a screen, we blink much less often than usual. As a result, the surface of the eye is less well moisturised and the natural tear film evaporates more quickly. This can lead to dry and irritated eyes, especially when working at a screen for long periods of time.
In addition, our eyes focus on short distances for long periods of time - a strain that can lead to fatigue.
Typical complaints with a lot of screen time
Many sufferers report
- Dry or burning eyes
- Tired eyes
- Blurred vision
- Headaches
- Feeling of pressure around the eyes
- Sensitivity to light
- Difficulty concentrating
These complaints are often referred to as "digital eye strain" or "computer vision syndrome".
Does screen time permanently impair eyesight?
Screen time does not usually cause permanent damage to the eyes. However, it can exacerbate existing visual problems and cause discomfort.
Experts are observing an increase in short-sightedness worldwide, particularly among children and adolescents. In addition to genetic factors, intensive close work and too little time spent outdoors play an important role.
Children's eyes need special attention
Children's eyes are still developing and react more sensitively to long periods of close work. Regular breaks and sufficient daylight are therefore particularly important.
Recommended:
- Age-appropriate screen time with deliberate breaks
- Regular time spent outdoors in daylight
- Maintain a distance of 30-40 cm when working at close range
- Preventive eye examination
What helps the eyes in everyday life?
Simple measures can often significantly reduce the strain on the eyes:
1. the 20-20-20 rule
Look into the distance for 20 seconds every 20 minutes - ideally at a point about 6 metres away.
2. blink consciously
Regular blinking stabilises the tear film and protects the surface of the eye.
3. ergonomic screen position
The screen should be positioned slightly below eye level and at a sufficient distance.
4. drink enough
A good fluid intake also helps to moisturise the eyes.
5. pay attention to the room climate
Dry air caused by heating or air conditioning can increase discomfort.
6. use tear substitutes
In the case of dry or irritated eyes, moisturising eye drops can help to stabilise the natural tear film and alleviate symptoms such as burning, tiredness or a foreign body sensation.
When should an ophthalmological examination be carried out?
If symptoms persist despite adjustments or if visual deterioration, pain or severe headaches occur, a specialist examination is recommended.
At the Zollikerberg Hospital Eye Centre, we advise patients individually on complaints relating to VDU work and eye health.
What digital devices really do to our eye health
Screen time & eyes: how to keep your eyes relaxed
Screen time is part of everyday life today - the key is to use it consciously. Regular breaks, sufficient time outdoors and good screen hygiene can help to relieve eye strain in the long term and prevent complaints.
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