Sounds like a simple meditation, though it's the first time ever I've heard about the blinking part.

Try this - We all have this buzzing/humming sound in your head that we normally don't notice. The sound is due to blood moving around in your head (my theory) so it is completely natural. Try focusing on it - over time it will get louder and louder. Same thing happens with any sound - or any stimuli. When you focus on it it gets stronger. I'm sure this would work with smell, taste, touch as well as with hearing and seeing. It is the act of focusing on it, not being distracted which amplifies the sensation. You experience the world exactly as your brain interprets it from electrical impulses created by your senses - if you focus on one sense it will fill your "world".