Related Clues:

• It's in front of the cornea
• Chapeau
• Shuteye shutter
• Eye cover
• Pot's top
• Something flipped
• Teapot feature
• Spill guard
• It's flipped when you flip
• It may be flipped
• Pop-top, for one
• Issue forth with force
• Container cover
• Eye shade?
• Oilcan part