The problem with this layout is that we need the capability to add quantities for each eye (or group of options).
The another direction for us to take would be to create a product page which could group options, and drop the idea of allowing for "Left Eye" / "Right Eye" quantity selection.
For example:
http://forum.x-cart.com/showthread.php?t=29757
By the way, the site you built at
www.dizzipinz.com is fantastic!
Chris