Sitting in front of a computer all day: Beware of these 5 harmful effects on your eyes.

VHO - For office workers or students, spending 8-10 hours a day in front of a computer screen has become a habit. However, behind the convenience of technology lie countless harmful effects on eye health.

Here are five dangers of working with computers continuously without protecting your "windows to the soul."

1. Persistent dry eyes and eye strain.

Sitting in front of a computer for hours on end forces the eyes to focus intensely on the screen, thereby reducing the frequency of natural blinking.

Normally, humans blink about 15-20 times per minute to keep the cornea moist, but when working on a computer, this number can be reduced to half. This makes the eyes prone to dryness, irritation, redness, and a feeling of having a foreign object inside the eye.

Sitting in front of a computer for extended periods can negatively impact your eyesight. (Image: Pinterest)

Furthermore, the blue light emitted from screens forces the eyes to constantly adjust, causing eye strain, headaches, and discomfort after many hours of work. If this continues, users may have difficulty concentrating and experience reduced learning or work performance.

To reduce dry and tired eyes, take regular breaks, blink frequently, and adjust screen brightness to suit your surroundings.

2. Increased risk of nearsightedness and vision loss.

Looking at screens at close distances for extended periods forces the eyes to constantly adjust, thereby increasing the risk of nearsightedness, especially among students and office workers.

When the eyes are constantly focused on a fixed point, the accommodative muscles become overworked and gradually lose their natural ability to relax. This leads to poorer distant vision and can easily cause myopia to worsen over time.

In addition, using computers in low light conditions or sitting too close to the screen can also cause eyesight to deteriorate more quickly. Many people also have the habit of using computers continuously without giving their eyes a rest, leading to prolonged eye strain.

To protect your eyesight, you should apply the 20-20-20 rule, which means that after every 20 minutes of work, look into the distance at about 20 feet for at least 20 seconds to allow your eyes to relax.

3. Causes headaches and difficulty concentrating.

When the eyes are constantly exposed to light from screens, especially blue light, the brain has to process a large amount of information for extended periods, leading to nervous strain. Many people often experience forehead pain, eye strain, or dizziness after working long hours continuously at a computer.

Furthermore, prolonged screen time causes constant eye strain, leading to visual fatigue and impaired concentration. These symptoms not only affect work performance but also negatively impact mental health and quality of life.

To mitigate this problem, users should take reasonable breaks, maintain an appropriate distance from the screen, and avoid using electronic devices for excessively long periods.

4. Sleep disorders caused by blue light

The blue light emitted from computer screens can seriously affect sleep quality if exposed to too much, especially at night. This type of light reduces the production of melatonin – a hormone that helps the body feel sleepy and regulates the circadian rhythm.

When melatonin is suppressed, people find it difficult to fall asleep, experience shallow sleep, or frequently wake up in the middle of the night. Many people have a habit of working or using computers before bed, which easily leads to prolonged insomnia, fatigue, and a lack of alertness the next day.

Lack of sleep not only affects the eyes but also negatively impacts overall health, leading to impaired memory, reduced concentration, and increased stress levels. Therefore, it's advisable to limit computer use before bedtime and enable blue light filtering when working in the evening.

5. Increased risk of eye diseases.

Prolonged exposure to computer screens not only causes temporary eye strain but can also increase the risk of developing eye diseases in the future.

When the eyes are constantly overworked, the cornea and retina are susceptible to damage, especially if users do not have proper eye care habits. Some people may experience conjunctivitis, dry cornea, or accommodation disorders due to excessive computer use.

Additionally, blue light from screens is believed to negatively affect the retina if exposed for long periods and at high intensity. These problems often develop silently, leading many people to overlook them and only discover they have significant vision impairment.

To prevent eye diseases, it is necessary to maintain a habit of regular eye checkups, supplement with good nutrition for the eyes, and use computers scientifically and reasonably.

Source: https://baovanhoa.vn/doi-song/ngoi-may-tinh-ca-ngay-can-than-5-tac-hai-doi-voi-doi-mat-231994.html