Everyone's had a photo that makes their eyes appear bright red. What is the cause of red eye, and what are some of the ways ...

The dreaded red-eye effect is the bane of any casual photographer ... It also explains why they’re so rarely seen in modern phone photos, as flash photography is less and less common.

Below that are two pictures of the Constitutional Court Jeong ... "An investigation needs to be launched on why Jeong's eye was red when the verdict came out," one user commented.