Mobility, for children with vision impairment, means helping them to learn to move safely and independently, learning routes and strategies for getting around familiar and unfamiliar places, and using supports like a sighted guide, long cane and a guide dog, if that becomes appropriate or desirable in teenage years or adulthood.
Habilitation refers to the fact that children are learning life skills for the first time, and are not getting used to a new set of skills having performed them as a sighted person first. It consists of teaching and learning daily living skills with increasing independence. For example: dressing, washing, eating and drinking, finding and taking responsibility for belongings, and generally learning all of the everyday skills and abilities that children acquire as they grow and develop.
Rehabilitation more commonly refers to the learning of everyday living skills for adults and/or people who have acquired a sight impairment.