The Triangle. A triangle "imposed" on the face of Holland Lops can help determine if the width between the eyes is good or poor. You want the length of the horizontal leg of the triangle to be at least equal to the length of the vertical legs. The greater the length of the horizontal leg and the shorter the length of the vertical legs, the better.
Another hint for determining if Holland Lops have good balance to it's head is to measure the distance between the eyes and compare it to the distance from the front of the crown to the top of the nose. These distances will be equal in a well balanced head.
Pinched muzzle; narrowness between the eyes; head too small to balance with the body. Cut severely for narrow or long head.