Do you have any good way to protect your eyes from the computer screen?

My eyes are so tired that it feels like headache, because I'd been using a computer for a long time. I wonder how people who use computers to take care of their eyes. If you have any good way, please share it. Could you?

If anyone is interested in translation, you can feel free to translate the passage among English, Japanese, Chinese or Korean as a comment.
翻訳に興味があれば、ご遠慮なく以上の記事を英語、日本語、中国語、韓国語の間にコメントとして訳してもいいです。
如果你对翻译感兴趣的话，可以把上文在英语，日语，汉语和韩语之间作为评论自由翻译。