One company bought all the retail outlets for glasses, used that to force sales of all the eyewear companies and jacked up prices by as much as 1000% - Boing Boing
Luxottica: How it Enjoys Monopoly in the Eyewear Industry
Black Veteran Owned Eyewear Brand Inspires You To Pursue Your Vision
Sunglasses: One Company Owns The Entire Industry - prch
Luxottica - Wikipedia
Does Luxottica Own 80% of the Eyeglass Industry? | Snopes.com
Luxottica: How it Enjoys Monopoly in the Eyewear Industry