Red eyes can be caused by mild problems like contact overuse and eye strain — or more serious issues like glaucoma or uveitis ...

Brown, green, blue, grey, heterochromatic, demonic red — nothing makes a first impression quite like your eyes. So, what do we know about your color... and how can you really make it pop?

You can fix red eye in photos on most newer iPhone models by using the Photos app, which has a built-in red eye correction tool.