Related Clues:
- Lens-filter holders
- Eyeglasses' edges
- Eyeglasses pair
- Glasses in spectacles
- The glasses in spectacles
- Glasses in glasses
- The glasses in glasses
- They're transparent in the eye
- Projector parts
- Contact ___
- Personal contacts?
- Contacts, e.g
- Elements in telescopes
- Canyon locales
- Do they lessen distortion of 4?