When you order prescription sunglasses from your optician and they fin the lenses themselves you will not be getting the same technology as intended by the original manufacturer. For example Oakley and Serengeti have some of the best lenses in the eyewear market so there is no point getting your own lenses put into their frames.

The prescription sunglasses will obviously cost more than the normal sunglasses but you are getting a top quality pair of sunglasses with custom made lenses. A lot of the prescriptions are produced in Europe or even in America where their technology has the edge for eyewear.