Sometimes, the difference between the two eyes was slight: Only a few hours apart. For the left eye, the sun had just risen; the right eye was already seeing the moon shine. But other times, her left eye only showed her an abyss in a great void, like that which preceded Creation, while her right eye could only perceive ruins and disaster after what could have been an apocalypse.
The metaphor is of nostalgia and fear of the future interfering with one’s ability to navigate life in the present. This is heavy-handed, and the one-man woodblock-print-style animation is not very impressive.