Related Clues:

• Monocle or contact, essentially
• Monocle part
• Light bender
• Eyeglass part
• Camera attachment
• Glasses part
• Camera accessory
• Place for a cap
• Nikon offering
• Photog's choice
• Brownie's eye?
• Optical device
• Fisheye or zoom
• Microscope lens
• You'll see right through it