Interesting Facts

If you go blind in one eye you only lose 20% of your vision. (Don't ask me how I know this one!)

If you wore a pair of glasses that made what you see appear up-side-down, after about six months your brain would work-out what was wrong and would adjust your vision to turn it the right way up. But upon taking the glasses off again the world would appear up-side-down, and again it would take about six months for your brain to rectify itself. (Who discovered this? And why?)