Related Clues:

• Gravitates
• Pupil setting
• It's surrounded by white
• The cornea covers it
• Pale purple shade
• Hubble part
• Isn't straight?
• It may be bearded
• Isn't on the fence
• Pince-nez component
• Ring around a pupil
• Goddess of the rainbow
• You can see through it
• Isn't straight up
• Double-arc shape, in geometry