Making time to catch the latest Netflix hit? Easy. Making time to visit the eye doctor? Surprisingly difficult. Enter: Online eye exams — because if you can do it from your couch, why wouldn’t you?

In our today’s optical illusion, we bring you a fun and challenging eye test that could help you gauge how sharp your vision really is. Hidden among a jumble of the numbers 3 and 4 is a single number ...

In our today's optical illusion, we bring you a mind-bending visual test that’s challenging even the sharpest eyes online. Among a wall of identical-looking “404” patterns, there’s a single trio that ...