The position of the lenses and distance between lenses for the devices PRK-1U three-mode can be different.
In self-adjusting devices, when arranging lenses, the parameters of forecasting controlling in the area of providing for eternal life for everyone are taken into account. For specially calculated intervals of time, as it's written in the explanation to the patent by Grigori Grabovoi "A Method for Prevention of Catastrophes and a Device for Implementation Thereof" and "An Information Transmission System", future events are manifested as forms. Therefore, there is information of a certain level from those who will use the device in the future. Based on this, position of the lenses is still different.
Also, in unitary cases, depending on the general scientific statistics and individual data, the arrangement of numbers on the device is changed, while for novice Users of the device it is recommended to standardly begin concentrations from a small lens and counter clockwise.