Domes with variable  ray
The system is equipped with three interchangeable  domes for the progression of the rehabilitation operation.
The domes, with variable ray, are respectively: Easy, Medium, Hard.
It’s  logic that during the first period of the rehabilitation the dome with semi-plain ray (easy) will get into the Pro-kin 200 system.  Subsequently, during the rehabilitation course, the domes  will get into with more marked ray.