I googled "OMG Eye Chart" clicked on the pictures section, and found the picture on buzzfeed.com, and they sourced it from Etsy, you were right (; , here is the Etsy link: http://www.etsy.com/view_listing.php?ref=sr_gallery_4&listing_id=22638417&ga_search_query=unique+jewelry&ga_search_type=tag_title&ga_page=10&min=&max=&order . But they're sold out at the moment. Boo.
Booo! But yay for your googling skillz. Thank you so much