![Popular Science Radio show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/052/small/popular-science-radio.png)
Summary: If you use a computer or cellphone screen for hours a day, you've probably noticed the strain it creates on your eyes. Optometrist, Tommy Lim, explains the dangers of the blue light emitted by our screens and teaches us how to protect against it.