ISO 9241-3
Ergonomics requirements for office work with visual display terminals (VDTs). The normative addendum to ISO 9241-3 is meant to eventually replace the informative Annex C of ISO 9241-3. It describes a visual perception compliance route - in contrast to the compliance with physical requirements given in the body of 9241-3 - that display manufacturers may follow in order to demonstrate conformance of their product with ISO 9241-3. The test consists of the measurement of two variables: the scaled attribute visual comfort and visual performance in a letter search task using pseudo-text.
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