Especially, they know that they have to stay on the computer for internet purposes late at night. After a while the monitor starts to look blurred. You can use it to protect your eyes, it is very practical to use and it is an effective add-on to almost every site. Uploading and using the add-on made for Google chrome on video. When you are active, the browser switch to nigh darker mode. If you have increased the fonts a little bit, You can stay in the computer until the morning and you can protect your eyes.