Related Clues:

• Look for private detective
• Object in the Pinkerton logo
• E reader at a checkup?
• Sight on the back of a dollar bill
• Retina's place
• Verb that sounds like the ninth letter
• Vital viewer
• Word with chart or color
• Word before 'cream' or 'mask'
• It has a uvea
• It might see quite a bit
• Study agreement in speech
• “It is a fault that springeth from your ____” (The Comedy of Errors)
• Squinter
• I said I could be on the lookout