Digital technology has penetrated every aspect of our daily lives. From smartphones and computers to TVs and tablets, screens are everywhere. At the same time, the amount of time we spend looking at them is increasing, which has sparked debates about the impact of this technological dependence on our eye health.
Digital eye strain (DigitalEyeStrain)
What is digital eye fatigue?;
Digital strain, also known as digital vision syndrome, describes a range of symptoms resulting from excessive use of digital devices. Symptoms include:
- Dry eye
- Blurred vision
- Headaches
- Eye irritation
- Diplomacy
- Autonomy
Causes of digital fatigue
Prolonged focusing at close distances requires constant work from the ciliary muscles of the eye. In addition, the lower blink rate during visual concentration causes dryness and discomfort. Blue light, emitted by monitors, further strains the visual system.
Blue light and its effects
What is blue light?;
Blue light is part of the visible light spectrum with wavelengths between 400 and 490 nanometres. LED displays emit high levels of blue light, which penetrates deeper into the retina than other wavelengths.
Effects on eye health
- Oxidative stress on the retina
- Possible acceleration of age-related macular degeneration (AMD)
- Sleep disorders due to melatonin suppression
The scientific debate
Although there is evidence of blue light pollution, the scientific community has not reached a definitive conclusion. Many ophthalmologists recommend precautionary measures, especially for children and adolescents.
Long-term effects of digital use
Myopia and digital use
Prolonged use of near vision, particularly in childhood and adolescence, is associated with increased rates of myopia. According to the World Health Organization, by 2050, nearly 50% of the world's population will be myopic.
Digital behaviour and maculopathy
There is concern that constant exposure to blue light and lack of natural light may contribute to the development of ochropathy and other degenerative retinal diseases.
Psychosomatic effects
Prolonged use of screens can affect mental health and cause:
- Increased stress
- Difficulty concentrating
- Reduced sleep quality
Children and screens - A particular danger
Development impact
the visual system in children is in development. Excessive use of devices:
- Slows down the development of normal visual acuity
- Increases the likelihood of developing myopia at an early age
- Reduces outdoor activity time, which is protective
Guidelines
- 0-2 years old: No use of screens
- 2-5 years old: Up to 1 hour/day with supervision
- 6-18 years old: No more than 2 hours/day, with frequent breaks
Prevention measures and response strategies
The 20-20-20 rule
Every 20 minutes of screen use, remove gaze for 20 seconds by looking 20 feet (~6 meters) away.
Orthotics and ergonomics
The correct position of the body and the screen, sufficient distance (~50-70 cm), and the right lighting can reduce eye strain.
Glasses with blue light filters
Special glasses that filter blue light may help reduce symptoms, although the results are conflicting.
Digital applications
Apps such as NightShift or blue light filters reduce exposure at night and improve sleep quality.
Technology and vision protection
Teleophthalmology
Remote monitoring of visual health through telemedicine enables immediate diagnosis and prevention.
Artificial intelligence (AI) in diagnosis
New artificial intelligence applications are detecting early signs of retinal disease with great accuracy.
Smart screens and AR/VR systems
Some monitors automatically adjust the brightness and reduce the emission of blue light. New AR/VR technologies are now designed with ergonomic criteria in mind.
The constant use of digital technology is an integral part of our lives, but it also carries visual risks. Awareness, prevention and proper use can protect our vision. Technological developments can act not only as a challenge but also as a tool to protect visual health.
