Related Clues:

• Some electric sensors
• Swiss-cheese holes
• ''___ of Laura Mars''
• They may be behind glasses
• Nero's eyes
• Mr. Potato Head removables
• Visual pair
• 'Mine -- have seen ...'
• The Guess Who's ''These ___''
• '___ Wide Shut'
• Colons in emoticons, often
• Caesar's peepers
• Spotters?
• Argus’ 100
• Blinkers, at times