Related Clues:

• Ophthalmologist's study
• Head set?
• Appraises
• View finders
• Focus group?
• Seeing things?
• Potato protuberances
• Some are electric
• See 56-Across
• Examines
• See 40-Across
• They're crossable
• See 98-Down
• They may be black, green, blue or private
• Hit song ''Bette Davis ---''