1. Vision enhancement apparatus for a vision-impaired user of interface equipment, comprising: a passive sensor to acquire real-time high resolution data representing the vicinity of the user; a sight processor to receive the acquired high resolution data and automatically: analyse the high resolution data to extract depth of field information concerning objects of interest extract lower resolution data representing the vicinity of the user, and, provide both the depth of field information concerning objects of interest and the lower resolution data representing the vicinity of the user to the interface equipment to stimulate artificial vision for the user.