Rasoir Sharp Vision

So I was snapping pics for my new magazine posts and I kept coming across these unique sunglasses by Miu Miu and after some research I found out they are called "Rasoir Sunglasses". Looking up the definition of rasoir I interpreted it as razor sharp sunglasses because the bottom is cut off and looks sharp like a razor. As far as I know Miu Miu is the only one making glasses like these but if I am wrong or if anyone has more info please let me know!!!