Spending extended periods on digital devices can result in a condition known as digital eye strain, also referred to as computer vision syndrome. Your eye muscles, blinking patterns, and even light exposure change significantly when you’re glued to a screen.
Reduced Blinking Rate
When we stare at screens, we tend to blink less often. Blinking helps keep the eyes lubricated and healthy. With fewer blinks, the eyes become dry, irritated, and strained.
This constant strain can cause the muscles around your eyes to feel fatigued, leading to heaviness or even mild twitching.
Blue Light Exposure
Screens emit blue light, a high-energy visible light that penetrates deep into the eye. While blue light helps regulate our sleep-wake cycle, prolonged exposure in artificial settings can disrupt circadian rhythms, strain the retina, and contribute to tired-looking eyes. Over time, exposure to blue light may also contribute to oxidative stress, leading to premature skin ageing and inflammation in the eye area.
Focus Fatigue
Your eyes are constantly adjusting their focus when you look at a screen. The closer the screen, the harder your eyes have to work. Over hours, this can lead to a form of muscle fatigue; your eyes may feel sore, blurry, or heavy, especially at the end of the day.
The longer this continues, the more pronounced the symptoms become—discomfort intensifies, and visible signs of eye fatigue start to emerge.