Related Clues:

• Crooked lines one removed from the glass
• Man's aid for better vision?
• Lesley held new refracting device
• Curved glass
• Hutton & co getting one in the eye
• Tends to ignore article that may change one's view
• City in France producing camera component
• This could enlarge short boys?
• Commune in Northern France making contact?
• It's behind pupil starting off learning each new subject
• Leonard's telescope will have one
• Smartphone part
• Microscope component
• City in northern France producing optical equipment
• Industrial town in Pas de Calais department