It's an image material of a pretty round eye shape, in front view, as hand-drawn by me. Quick blank pair of round eyes on the page, when you need 'em.
You can simply drag and drop this eye shape onto your canvas, whenever you want an easy, symmetrical eye outline.
These are pretty round, but you can stretch them out as needed.
I use them as a reference when very crudely aligning facial features as a base for a drawing.
For example (Just the eye outline, as seen in thumbnail, is included):
