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Computer Vision Syndrome (CVS) is an eye condition that results from prolonged computer use without giving the eyes sufficient rest. If you spend most of your day working with digital screens, you may be at risk of developing the following symptoms.

1. Eye Muscle Fatigue

Staring at a computer screen requires significant effort from the eye muscles to maintain clear focus. Reading text also involves frequent eye movements. When the eyes are used continuously for more than 2–3 hours, these muscles can become fatigued.

2. Eye Symptoms from Prolonged Use

For individuals without pre-existing vision problems, extended periods of intense visual work may cause temporary short-sightedness.
However, for those with existing issues—such as nearsightedness, farsightedness, or astigmatism—working without proper corrective lenses can worsen vision abnormalities.

3. Dry Eye Syndrome

Normally, a person blinks about 20 times per minute. When using a computer, this rate decreases because the eyes stay focused on the screen.
Combined with cool, dry air from air conditioning, this can easily lead to dry eye syndrome, causing irritation, redness, or a gritty sensation.

4. Light Sensitivity

Brightness levels vary across devices like computers, smartphones, and tablets. If the brightness is set too high or too low, the eyes may become strained. Prolonged exposure to inappropriate brightness settings can lead to light sensitivity.

Protecting Your Eyes with These Techniques

• Adjust your screen distance and position

Ensure your eyes are aligned with the top edge of the monitor or about 20 degrees below eye level. Maintain a viewing distance of about 16–30 inches.

• Take regular visual breaks

After 20–30 minutes of screen use, rest your eyes for 2–4 minutes.
Every two hours, look into the distance for about 15 minutes before returning to work.

• Adjust screen brightness appropriately

Set your screen brightness to a comfortable level and make sure the lighting in your workspace is balanced. Avoid glare or reflections directly hitting your screen.

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