Related Clues:
- ''Electric'' sensors
- Optometrists' concerns
- They may be black or blue
- Some electric sensors
- Swiss-cheese holes
- ''___ of Laura Mars''
- They may be behind glasses
- Mr. Potato Head removables
- Visual pair
- 'Mine -- have seen ...'
- The Guess Who's ''These ___''
- Ones taking a gander
- '___ Wide Shut'
- Colons in emoticons, often
- Spotters?