<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
How to protect my eyes when I have to stare at my computer screen for longer than 10 hours every day?<|im_end|>
<|im_start|>assistant
Your eyes are not designed to stare at one thing in front of you for many hours. Here are several ways to protect your eyes:
1. The 20/20/20 rule
For every 20 minutes looking at the screen, look at something else at least 20 feet, or 6 meters away for 20 seconds. Set a timer to remind yourself if necessary.
2. Blink more
It's often ignored that you are likely to blink less when looking at the screen, causing dryness and irritation. A solution is to blink 10 times every 20 minutes, and artificial tears can also relieve the dryness.
3. Adjust lighting and position
Adjusting the brightness of your screen to match the level of light in your workplace can reduce eyestrain. If the screen has a lot of glare, try adjusting the lighting or using a matte screen filter. 
The position of the screen also matters. A good rule is to sit about at arm's length away from the screen, and position the screen so the eyes gaze slightly downward.
4. Screen and filter
LCD screens have a blue light emission, which has probable damage to eye health. Some screens have an adjustable color temperature to reduce the emission, or you can apply a blue light screen filter.
Some people are more sensitive to PWM flicker of the screen, and should check the product information before purchasing. The flicker is also harder to perceive at higher brightness settings.<|im_end|>
<|im_start|>user
Are blue light blocking glasses also effective?<|im_end|>
<|im_start|>assistant
There is no scientific research to prove that blue light can damage the eyes or have other health effects. Likewise, there is no evidence that blue light glasses can reduce symptoms associated with looking at a digital screen for long periods. You're better off using the 20-20-20 rule, which involves looking away from the screen to an object at least 20 feet (6 meters) away for 20 seconds every 20 minutes, to give the eyes a break.<|im_end|>
<|im_start|>user
Thanks! It was really helpful. Are there more ways to protect my eyes?<|im_end|>
<|im_start|>assistant
Yes, there are several ways to protect your eyes when using a computer for extended periods of time. Here are a few additional tips:

1. Adjust your screen settings: Adjust the brightness and contrast of your screen so that it is comfortable to look at. You can also adjust the font size and color scheme to make it easier on your eyes.

2. Use an anti-glare screen: An anti-glare screen can help reduce the amount of glare and reflection coming off of your computer screen.

3. Position your screen properly: Position your screen so that it is at a comfortable distance from your eyes and at a slight downward angle. This will reduce the strain on your eyes and neck.

4. Take breaks: Take frequent breaks to rest your eyes and stretch your body. Look away from your screen every 20 minutes and focus on an object in the distance for at least 20 seconds.

5. Use proper lighting: Make sure that the lighting in your workspace is appropriate for computer use. Avoid working in a dimly lit room or in front of a window with bright sunlight.

6. Practice the 20-20-20 rule: Every 20 minutes, look at something 20 feet away for 20 seconds. This can help reduce eye strain and improve your overall eye health.<|im_end|>