How does screen time affect vision? Doctor-medic Bányai explains

In our modern digital world, we spend more time in front of screens than ever before. In Germany, average screen time rose after the pandemic to as much as 10 hours a day. Whether it’s computers, tablets, smartphones, or TVs, our eyes are under constant strain. But how exactly does this screen time affect our vision?

Effects of Screen Time on the Eyes

Prolonged screen time can have several negative effects on the eyes. A common problem is digital eye strain, also known as computer vision syndrome (CVS). Symptoms include:

• Dry eyes: Less blinking while looking at a screen reduces eye lubrication.
• Eye fatigue: Prolonged focus on a screen can lead to eye muscle strain.
• Headaches: Prolonged focus on a screen can cause headaches.
• Blurred vision: Prolonged screen use can impair visual acuity.
• Neck and shoulder pain: Often caused by poor posture while working at a computer.

Why do these problems occur?

When we look at screens, our eyes constantly focus at a single distance. This is markedly different from natural eye behavior, which involves viewing objects at varying distances. Our eyes also blink less, which can lead to dry eyes. In addition, screens emit blue light, which further strains the eyes and can disrupt sleep patterns.

Long-term effects

Prolonged screen use can cause not only short-term discomfort but also increase the risk of more serious eye problems. Studies show that excessive screen time can lead to a deterioration in visual acuity and an increased risk of myopia (short-sightedness). This is particularly concerning for children and adolescents whose eyes are still developing.

Tips to Reduce Eye Strain

There are several strategies to minimize the negative effects of excessive screen time:

• 20-20 Rule: Take a 20-second break every 20 minutes and look at an object at least 5 m away.
• Blink consciously: Make a point of blinking regularly to keep your eyes moist.
• Screen position: Make sure the screen is about 50–70 cm from your eyes and positioned slightly below eye level.
• Adjust the lighting: Avoid glare from external light sources and set the screen brightness appropriately.
• Blue-light filter: Use blue-light filters or glasses with blue-light protection.

Why choose laser eye treatment for vision problems?

Laser eye treatment can be a permanent solution for many vision problems exacerbated by excessive screen time. If you have short-sightedness, long-sightedness, or astigmatism, laser eye treatment can significantly reduce your dependence on glasses or contact lenses.

This means less strain on your eyes—a major advantage, especially with intensive screen use in everyday life. Experienced specialists such as those at Bányai Neue Augen offer individually tailored treatments at their modern centers for laser eye surgery in Karlsruhe and Stuttgart to help you regain clear vision—without visual aids.

Take the next step

Wondering whether you’re a suitable candidate for laser eye treatment?

Begin with our suitability test. You will receive an initial assessment of whether laser treatment is an option for you. Answer a few simple questions (about 2 minutes) about your vision and any visual aids you’ve used.