from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Informal Eliciting wonder or astonishment: an eye-popping display of fireworks.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Visually astonishing, stunning, incredible.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. amazingly impressive; suggestive of the flashing of lightning
The image is of a viewer's eyes opening wide to the point of popping out. (Wiktionary)