2Useful software A variety of software can be obtained from:- For the UK, a list of agencies (such as RCEVH, NW SEMERC), and useful publications, are provided in Appendix II.

Crossing the midline

You may find the learner does not continue to follow an object's movement once it passes the midline (ie. an imaginary line passing at right angles to the two eyes). For some learners no amount of intervention will results in successful crossing of the midline. Nevertheless, before assuming this to be true, try the following:- hands following objects; association with other sensory information; verbal cueing of position; use of self-produced echoes for position.