Related Clues:

• "Windows to the soul"
• View-finders?
• Seeing things
• Mr. Potato Head piece
• Observers
• Balls with lids
• Argus's 100
• Some are private
• Sight seers
• They may be brown or blue
• Ones staring
• Needle parts
• They fill some holes in your head
• Optometrist's concerns
• Ones giving the once-over