Van Dyke's Dark Sheep eyes are available in a variety of styles to suit your needs. The aspheric lens feature a natural "A" shaped taper from the top of the eye to the base. The concave / convex lens is the most economical and popular shaped lens in the industry. The eyes are a round shape without much taper from top to bottom. Sold per pair. 
With White Band:                                              Without White Band: 
 
Natural Eyes - Aspheric Lens            
           AFE Series - Concave / Convex Lens 
Bio-Optix II - Aspheric Lens                 
          McKenzie Eyes – Aspheric Lens 
Pre-Rotated II - Aspheric Lens 
AFE2 Series – Aspheric Lens |