Lesson no. 8: Displays

lesson_8_OAONowadays, and in a growing trend for this century, displays technologies are continuously used in daily and professional applications. But, the light-matter-brain interaction (or HCI) involved in this human activity can lead to several ocular and visual problems (Computer Vision Syndrome or CVS).

In this lesson we will see a definition for display, its history, the variety of current technologies, and the current and potential applications, even including 3D displays. In addition, the computer vision syndrome, initially proposed for 2D displays, will be analysed, even discussing what would the ideal or optimal display from the visual ergonomic point of view? For a better understanding about it, some concepts will be introduced on image generation and the interaction with the human visual system.

Later, a complete list of visual capabilities or functions involved in displays will be introduced and compared to evaluate the concept of visual comfort using 2D displays, including text and image legibility, joint to visual information intelligibility and usability for scientific visualisation, lighting conditions, and the UNE-EN-ISO 9241 normatives.

After that, all optometric variables related to prevent CVS for 2D displays will be introduced and discussed. And finally, with an own section, we will see the optometric variables involved in the visual fatigue using 3D displays.



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