Possible Clues:

• View ruiner
• Sees mineral deposit as a blot on the landscape
• Looks with love -- soldier's a terrible sight
• Eeyore's unfortunate blemish
• Something exceedingly ugly
• A monstrous carbuncle
• Ease about yes, or an ugly case of conjunctivitis
• Watches crude material that's offensive to viewers
• Poor Eeyore's not a pretty sight
• Looks on a metal container as an obnoxious thing