Control Interfaces and Ergonomics

Because microsurgery targets a site that is beyond the typical direct perceptual and manual capabilities of humans, a critical aspect of this field is the usage of technologies that 

The interface evaluation can be done based on quantitative performance data. Such data may be obtained experimentally using imaging-based metrics of surgery-like tasks [68] or biometric variables about user state and workload (e.g., eye tracking [69], psychophysiologi-cal changes [70], and motion analysis [71]). 

Furthermore, qualitative methods like video analysis of behavior [72] can also be used. These consider the direct observation of user s behavior during the actual task in order to find the meaning of certain situated actions and, for instance, the reasons for a breakdown during the interaction. 

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