Staring at a computer screen can strain your eyes.

盯着电脑屏幕会使你的眼睛疲劳。

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Staring at a computer screen all day really makes my eyes hurt!

整天盯着电脑屏幕看，眼直发痛！

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Research shows we blink far less often when staring at a computer, and that's a major contributor to eyestrain.

研究表明，当我们盯着电脑的时候，我们眨眼睛的次数太少了。这是引起视疲劳的主要原因。

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Julia gave up her dream of working outdoors, and spent the rest of her life closeted in a room staring at a computer screen.

FORBES: When Julia Tried to Start a Business

More than 40% of Americans spend three or more hours a day staring at a computer or hand-held, according to the American Optometric Association.

WSJ: How Technology Tries Our Eyesight

Even worse, the study also found a 48 percent increase in deaths from any cause among people who spent excessive time staring at a computer or television screen.

FORBES: Four hours on your computer doubles risk of heart disease