For this animation I placed a tiny version of my svg (at .5%) inside a full scale version inside a gigantic version (10,000%) - which is as far as NodeBox zooming allows. I lined everything up so that my left eye was centered on the origin. It was fun just to manually zoom in and out.
To make the animation I combined and grouped everything and added yet another scale node to control the zoom. I could have created the zoom by hooking a frame node directly to that scale node, but a linear zoom bogs down after awhile. To create a steady accelerating plunge into my eye I needed an exponential zoom. So the frame node goes to a power node which THEN goes into the scale node. The power node was set to 1.05 raised to the frame number (the same rate you would get in a savings account by compounding interest at 5%).
It took a little trial and error to find the best start and end points to create a nice repeating loop: 87 to 194 in this case. I used GIF Brewery to convert the MP4 to a GIF.
Enjoy!
John