The Basics
More to come.
Appears to not be perfect, will revisit later.
Installation
Basically just include the file.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="/libs/jquery-follow-cursor/follow-cursor.js"></script>
<canvas id='eye' height="220" width="220"></canvas>
<script>
$('#eye').followCursor();
</script>