I hate when people post shit like this. Someone takes an article and uses facts that are little know to make theories and then someone buys it and posts it. Now I am all for the mysteries of space, I've been into this shit since I was a kid. The Hourglass Nebula has always looked like that since the day it was discovered, in 1995...
It has always looked like an eye. I think it's the coolest nebula out there personally.
The picture that was linked of the "eye being closed" is not, and has never been the Hourglass Nebula. It is a supernova. SN 1987A to be exact. The link kind of gave it away... Here is a link
of what it actually is. It's located in the Tarantula Nebula. A nebula so bright, that if it was located where the Orion Nebula is, it would cast shadows on Earth.