Design and make your own eyewear collection and sell

Many opticians become spectacle frame makers to address their local market. They make their collection, sell locally first, and very often: they end up selling nationally and even internationally. All are successfully, a true 100% case of success. 
We like to call them "Micro-Breweries of Eyewear" and the benchmark is more relevant than it sounds. Definitely a successful business model for many years to come for ambitious outsiders and investors in this beautiful fashion and in the same time technical products: spectacle eyewear...