The Hess test or its variations are currently valid for diagnosing and monitoring the development of oculomotor paralysis and diplopia.  However, the systems used so far lack flexibility and the possibility to adapt to the interests of the explorer. There is therefore a need for a system that supports the doctor in a simple, efficient and reproducible way, that can be adapted to his needs and that provides him with the necessary information at the moment he needs it. In order to achieve these goals, the system has been designed to meet the following requirements:

1. Simplicity of installation and use.
2. Efficiently usable both by ophthalmologists and neurologists or other personnel who need it.
3. Possibility of personalised configuration of the scanning screen and the size, shape and colour of the cores. In this way it can be valid for research, as all parameters can be modified.
4. Possibility to set the location of the scanning points in a customised way, according to Hess or Lancaster parameters. A reduced scan using 9 points, an extended scan using 25 points and a free form scan where the token can be placed at any position on the scanning screen are available. The points used can be the usual ones or chosen individually, so that different scanning strategies can be devised. This does not exist in the usual systems.
5. Possibility of scanning with at least 50° of amplitude, so that the maximum duction fields of each muscle are included.
6. Possibility to scan and record the torsional element of the deviation, which other systems lack.
7. System for recording all scanning parameters: distance, size and colour of the screen, size of the cores used, their shape and colour, type of scanning performed, responses made, variations in the response of each point expressed in pixels, millimetres or degrees.
8. Printout system of the tests performed, including both graphical and numerical data.
9. A system for comparing the tests performed in such a way that the evolution of a point or group of points can be followed through the different scans.
10. Possibility of performing the Hess test automatically or completely manually.