The use of Data Visualization Screens (DVI) has increased considerably in recent years. The analysis of data, the writing of complex reports, mathematical calculations, computer programming, advertising, and even architectural design, require higher and better performance increasingly more efficient.

This highlights the need to meet the ergonomic requirements necessary to ensure the occupational health, as can be deduced the growing evolution in the use of PVD is concerned.

Royal Decree 488/1997, of 14 April, on minimum safety and health provisions relating to work with equipment including display screens, states in its Article 1 that, among others, the so-called “portable” systems are excluded from the scope of application of this Royal Decree, as long as they are not used continuously in a workstation.

In this way, since they are not covered by the Royal Decree, these equipment have the risk of not complying with the optimal ergonomic design requirements in order to avoid musculoskeletal disorders, visual problems, and mental fatigue.

The use of laptops as a system excluded from the scope of the RD will be discussed below.

What are the main ergonomic problems in laptops?
In the use of laptops, the main problems are at screen, keyboard and mouse level. The integration of the three elements is not ergonomic for the development of the work.

The screen may not be large enough for the correct use and reading of work documents. Also, the layout of the screen in distance and angle to the user’s vision may not be adequate.

On the other hand, the keyboard and mouse force forced postures and movements of the hands and fingers to have a smaller size than desktop computers.

These aspects are more complicated to control when workers spend part or all of their working time from home (teleworking).