Digital ergonomics: how to avoid visual pains in critical environments

kvm deskwall home 2 gesab

The eyes are vital organs in our daily life. Except during sleep, a great variety of visual information is perceived by us trough them, that is why is an essential aspect to take care of in operators of critical monitoring environments.

El uso de ordenadores y pantallas de visu The use of computers and display screens greatly facilitates the performance of a myriad of tasks, but at the same time causes symptoms related to their prolonged use, which can lead to complications such as eye fatigue, stinging, dry eyes and other problems.1

The National Institute for Occupational Safety and Health of Spain indicated that 70,6% of workers who used computers in their workplace suffer from eye fatigue, this condition being considered the most common pain among screens users.

Due to the workplaces with mult-icreens often involve tasks requiring much concentration and attention for long periods of time, it is common to feel symptoms of any visual pain, which are tried to alleviate or solve through hardware adjustment options to adapt as much as possible to each person ergonomics or other important environmental variables such as providing ergonomic chairs, adjustable monitor supports to best adapt the position of the screens to the ergonomics of each person, and ergonomic technical furniture that offers height adjustable work positions through sit&stand system. system.

Although all these changes are vital to improve visual health, there is still one aspect to focus on which is the digital workspace that we visualize on the creens. It is in this area where GESAB has enhanced the resources that the dynamic KVM DeskWall offers to provide digital ergonomics tools to our users; innovation aimed to improving the health of operators in critical environments with multiple display screens, either on multiple monitors or on a large format monitor where multiple sources are included.

digital ergonomics main working area

Considering the new functions of digital adaptations of the work environment, DeskWall is the first platform that offers the operator the ability to regulate its personal area of the workspace without the need to fisically move the monitors. Also, it allows an extreme adaptation of the digital personal area for ergonomics fully adapted to its needs.

For example, a digitally adaptable height and position can be established, thus, the positioning of the main sources will be according to the user height.

digital ergonomics screen heigh.
digital ergonomics human eye angle

Taking into account the viewing angles of the human eye and the degrees of rotation that are ergonomically accepted and comfortable for the operator, some recommended areas are defined to locate the sources and the most critical and most used work areas, depending on the configuration of the monitors set.

Sources, signs and workspaces must be located and adapted according to the specific processes and tasks of each operational position. Placing critical information in the center of the work area and maintaining a clickwise distribution of sources according to relevance are some of the basic recommendations when configuring the work space digitally.

digital ergonomics display area

The adaptability of the main work area allows to order work sources and windows depending on their relevance and display time, prioritizing the central zones and those within the optimal parameters of visual ergonomics.

1. Large format screens

ergonomía digital pantalla gran de formato

2. Panoramics screens

ergonomía digital pantallas panorámicas pequeñas
ergonomía digital pantallas panorámicas grande

Improvements in ergonomics and comfort help to boost the engagement and wellness of people.

Guide to visual attention patterns and design of work layouts

The requirements of configuring the disply taks environment build the base for efficient capture of dynamic information, thereby they acelerate the data analysis.

The Integration Guide for Dynamic Areas of Interest (IGDAI) enables automated eye movement classification for both static and dynamic spaces.

To configure this Guide a verification study was carried out, taking as an example the environment of an air traffic operator, where the participants must distinguish between different types of dynamic objects. The results show that the 5 factors described belo contribute to a more detailed and faster view of the distribution of eye movemen.2

The five factors that affect to the patterns of visual attention of users for the interfaces of multi-screen are2-5:

The display contiguity
Spatial arrangement of the screens in terms of the visual field grouping related screens.

ergonomía digital contigüidad visualización

The angular coverage
Size of the field of view from the observer’s position increasing and centering the most important.

ergonomía digital cobertura angular

Content coordination
Sort by screen display order.

ergonomía digital coordinación de contenido

The input correspondence
Consider the cognitive commitment or time required to understand the content. Think of natural paths, like clockwise.

ergonomía digital correspondencia de entrada

Input directivity
Sort by content priority.

ergonomía digital directividad de entrada

In a multi-monitor environment, more attention is paid to the center screen, with a higher success rate and lower false alarm rate. High-risk and critical information must be placed in the core region to be detected effectively.

The results suggest that management system designers should consider the trade-off between the number of multiple split screens and the limited human ability to monitor performance.

Furthermore, it is shown that high-risk and critical information must be placed in the central region to be detected effectively.

Referencias:
1. Ardahan M, Simsek H. Analyzing musculoskeletal system discomforts and risk factors in computer-using office workers. Pak J Med Sci. 2016;32(6 ) :1425-1429.
2. Friedrich M, Rußwinkel N, Möhlenbrink C. A guideline for integrating dynamic areas of interests in existing set-up for capturing eye movement : Looking at moving aircraft. Behav Res. 2016.
3. Lin C, Chang H, Chen H. Human signal-detection performance in multiscreen monitor¬ing tasks. Perceptual and Motor Skills ( 2009 ). 109; 546-550.
4. Vatavu R, Mancas M. Evaluating visual attention for multi-screen television : mea-sures,toolkit, and experimental findings. Pers Ubiquit Comput ( 2015 ).
5. Hessels R, Kemner C, Boomen C, Hooge I. The area-of-interest problem in eyetracking research : A noise-robust solution for face and sparse stimuli. Behav Res ( 2016 ). 48; 1694–1712.

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