How to make your eye feel like it's closed, when it's actually open

http://scienceblogs.com/cognitivedaily/2008/05/how_to_make_your_eye_feel_like.php

In fact, my left eye felt as if it was closed. I made every effort to open the eye, but it seemed that some unstoppable force was keeping it closed. The only way to make my eye feel as if it was open was to cover it with my hand. I still couldn’t see anything with the eye, but at least I could convince myself it was open.