Add curve prescription lens into sunglasses frame 
Wrapround sunglasses which curve around the head , looks fashion , but prescription sunglasses made with extreme curves typically distort vision .
The base curve is the front curve of any sunglass lens. Sunglasses typically feature base curves between 6 to 10 base .

Sunglass models that feature a 6 base tend to be more flat on the lens . While 10 base styles provide the maximum wrap around your face. Base curves above 8 are not recommended for prescription lenses and the higher the Rx - the flatter frame is advised  .