Ergonomics of human-system interaction -- Part 920: Guidance on tactile and haptic interactions
It does not provide recommendations specific to Braille, but can apply to interactions that make use of Braille.
The recommendations given in ISO 9241-920:2009 are applicable to at least the controls of a virtual workspace, but they can also be applied to an entire virtual environment — consistent, in as far as possible, with the simulation requirements.
NOTE It is recognized that some interactive scenarios might be constrained by the limitation that a real workspace is to be modelled in a virtual environment. Objects can be in suboptimal positions or conditions for haptic interaction by virtue of the situation being modelled.