Computer Vision Syndrome

Computer Vision Syndrom (CVS) is a syndrome that causes visual disturbances caused by continuous, non-stop computer use for 2-3 hours.
This syndrome is manifested by the following signs

- Eyes tired, stressed.
- Feeling of dry eyes, hot eyes, sticky eyes or strange objects in the eyes.
- Eyes blind, sometimes headache or pain in the eye socket.
- In the long term, you will see neck pain, back pain

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The syndrome usually appears in the afternoon, after a tiring day at work, the right eye often has a lot of access to the air.
4 causes of computer-induced vision syndrome (CVS)
1. Do little blink
When using a computer, because the eyes often have to focus more attention, the number of blinks decreases In normal eyes, the average number of blinks is 14 times / minute; when using a computer, the number of blinks is only 6-7 times / minute, which is reduced by more than half.




Blinking works to help the eye spread the tears evenly on the surface of the eyeballs so that the eyes are smooth, clear and removes the dirt on the surface of the eyeballs. When the blink of an eye is less, the eyes will be dry and fuzzy like car glasses with lots of dust without being cleaned.
When we stare at a computer screen, we tend to open our eyes larger, so that the access between the eyeball surface and the air increases, making the eyes dry faster.
Reduce the reflected light and screen light if it is too bright
2. Due to the light reflection
The reflection of light indirectly around the eyes and directly from the computer screen will make the eyes easily tired.
3. Computer screen
The letters and images on the screen are a collection of small dots called pixels, rather than a homogeneous block Therefore the brain must work regularly to integrate these pixels into the image of the object and make the eyes tired.




If the computer quality is not good, the light fluttering and vibrating, the more tired and stressed eyes.
4. Working conditions
If the distance from the eye to the computer is not appropriate, such as the computer is too close to the eye or is too high, the eye must look up frequently, so it will require more regulation, widen, eye muscles work harder, causing fatigue.
Prevent computer vision syndrome
When symptoms appear, we should: After every 30 minutes of working in front of the computer, the eyes should rest
1. Pay attention to blink more often to keep your eyes from drying.
2. After every 30 minutes of working in front of the computer, rest your eyes (close your eyes, listen to music or look at distant spaces).
3.



Reduce the reflected light and the screen light if it is too bright.
- Position the camera so that the window is on the same side as the screen, use the blinds in the window to block out the light.

- Adjust the light in the room to avoid reflecting on the screen, moving the position of the lights with direct light on the screen.
- Use a light curtain for the screen.
- Use extra glasses to protect your eyes (like UV glasses).
4. Select a computer with a large, flat screen and check the contrast, adjust the lighting of the screen to the appropriate level. Keep the monitor at a minimum of 50-60cm from the eyes, below eye level 10-200.




Treatment
Eye drops with artificial tears, especially those prepared specifically for this syndrome..

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