Electronic devices offer convenience and enjoyment, yet they also bring significant issues. For instance, prolonged exposure to screens can trigger a range of eye discomfort symptoms. Beware of Eye Strain from Extended Screen Use Eye Fatigue: Prolonged electronic device use alters the eye's focusing ability and binocular vision function, leading to visual fatigue.Additionally, electronic screens emit flicker—meaning the display constantly flickers. The human eye must continually adapt to this flicker, making prolonged use more likely to cause eye strain.Since tears are spread across the eye's surface through blinking, reduced or incomplete blinking leads to surface dryness, potentially causing dry eye syndrome.
Blue Light Damage: Electronic screens emit high-energy short-wavelength blue light, the second-highest energy short-wavelength light source after ultraviolet rays. This light can penetrate the cornea and lens to reach the retinal layer at the back of the eye.Prolonged blue light exposure may contribute to macular degeneration. Myopia: Studies indicate that the onset and progression of childhood myopia correlate with prolonged near-distance activities. Extended close-up use of electronic devices accelerates myopia development. Other eye discomforts: Foreign body sensation, blurred vision, eye pain, redness, swelling, tearing, etc.
Practice these habits to reduce screen time
Promote healthy lifestyles by consciously limiting electronic device usage. Adults should minimize non-essential activities like mindless scrolling through social media, watching short videos, online shopping, or binge-watching TV shows. Children's non-academic screen time should be restricted to no more than 20 minutes per session and a total of one hour daily. Reduce "passive" screen exposure for children and adolescents.This requires collaborative efforts across sectors: government agencies should establish relevant policies and metrics; schools must strictly enforce non-digital teaching methods and homework assignments; families should supervise usage, with parents leading by example.
If electronic device use is unavoidable, follow these practices to minimize eye strain:
Take adequate breaks: Eye damage from screens is partially reversible, making rest crucial for symptom relief.Limit continuous screen time to no more than one hour. Take breaks every hour to gaze into the distance and view greenery. Increase blinking: This seemingly insignificant action is vital for eye health. Consciously increasing blinks while using devices can reduce dry eye symptoms.
Choose certified screens: The quality of electronic screens varies widely on the market, making it crucial to select certified products.Opt for screens with larger displays, bigger fonts, high resolution, high refresh rates, and appropriate brightness levels. Use blue light filters to reduce exposure to high-energy blue light emitted by screens.
Maintain good posture: This includes proper sitting position, correct viewing angle (eyes slightly downward at a 15°–20° tilt when looking at the screen), and adequate distance (at least 50 cm away; increase font size and move the screen farther if possible).
Optimize your work environment. Environmental factors like low air humidity, air conditioning units, and ventilation fans can trigger eye discomfort. Minimize electronic device use in such settings. Use artificial humidifiers appropriately to maintain humidity between 30%–60%, ideally averaging 45%.
Warm Compresses Applying a warm towel compress to the eyes for 10–20 minutes daily can effectively alleviate eye discomfort caused by digital device use.
Medical Treatment If severe eye discomfort interferes with work or daily life, seek prompt medical evaluation.