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The computer has become a constant presence in people’s daily lives, serving as an essential tool in a modern and globalized world, used in workplaces, schools, and homes. However, a question arises: does prolonged computer use affect vision?
In an era where computers are indispensable tools across workplaces, schools, and homes, the lingering inquiry persists: does our increasing reliance on screens compromise our vision health?
Symptoms – Excessive computer use can cause a range of vision-related symptoms known as Computer Vision Syndrome or Digital Eye Strain. Here are some common symptoms:
1. Eye fatigue: A feeling of tiredness or exhaustion in the eyes after extended computer use.
2. Blurred vision: Difficulty focusing, especially when switching between the screen and distant objects.
3. Headaches: Prolonged computer use can lead to headaches, often due to constant visual strain.
4. Dry eyes: Prolonged exposure to the computer screen can reduce the blink rate, leading to dry eyes and discomfort.
5. Eye irritation: Redness, itching, and irritation in the eyes due to continuous visual effort.
6. Light sensitivity: Continuous exposure to the computer screen light can increase light sensitivity, causing visual discomfort.
7. Double or blurry vision: Difficulty maintaining clear, single vision, especially when switching between the screen and distant objects.
8. Difficulty concentrating: Visual fatigue can affect the ability to concentrate and perform visual tasks.
Causes – It’s important to understand that radiation from the screen is very low and limited to a distance of 2 to 3 centimeters. So, why does eye discomfort occur after a day of computer use? This is generally attributed to fixing the eyes on a point for long periods, resulting in decreased blinking reflex and muscle fatigue in the eyeballs.
Blinking is an involuntary action that spreads tears across the eyes, lubricating and protecting them from the external environment. When this blinking reflex decreases, the eyes can become dry, leading to symptoms such as burning, redness, and a sandy feeling in the eyes. Prolonged computer use, combined with air conditioning, which increases tear evaporation, can exacerbate these symptoms.
Headaches and visual fatigue occur due to the muscle effort needed to keep the eyes focused on the monitor. It’s recommended to develop the habit of taking breaks when using the computer, such as looking at a distant point for 20 seconds every 20 minutes of use, and to remember to blink more often
It’s important to note that posture also plays a significant role, as a poorly positioned monitor, inadequate lighting, or a low chair can increase visual strain. Maintaining proper posture while using the computer helps prevent both visual and muscular discomfort, promoting a healthier experience during computer activities. Workplace ergonomics, including the arrangement of devices and appropriate lighting, is essential to preserve visual health and minimize potential adverse effects related to prolonged computer use.
To minimize these symptoms, consider following some practices:
Take regular breaks: Every 20 minutes, look at a distant object for at least 20 seconds.
Adjust screen settings: Ensure that brightness and contrast are properly adjusted.
Proper positioning: Keep the computer screen at eye level and at a comfortable distance.
Use screen filters: Consider using screen filters to reduce glare and blue light emitted by the screen.
Keep eyes hydrated: Use artificial tears to keep the eyes moist.
If symptoms persist or worsen, it is advisable to consult an ophthalmologist for evaluation and appropriate guidance.
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