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Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Bifocals: Not credited, Public domain, source
- Shooting glasses: Francis Flinch, CC BY-SA 4.0, source
- Glasses: Jacek Halicki, CC BY-SA 4.0, source
- Bug-eye glasses: Nicki Varkevisser, CC BY 2.0, source
- Snooker glasses: SMcCandlish, CC BY 3.0, source