What you have to do is focusing on the + cursor in the middle. Within 10 seconds, you will notice the pink dot around disappear on sight. You will also notice green dot circling around before the disappearance of pink dot. If so, you have a normal eyesight.
Our eye balls will be focusing on an object instead the surroundings will be faded with focus. Just like programming language focus=0. I have no idea what this phenomenon is called but at least, I know it's an eye test. Haha!
