1. Ten years' experience in low vision practice;Boulton;Aust NZ J Ophthalmol,1986
2. Portavaid Manufactured by Telesensory Systems Co. Ltd P.O. Box 15081, Wellington, New Zealand
3. Voyager CCTV Manufactured by Visualtek 1610â26th Street, Santa Monica CA 90404, USA
4. Vantage CCTV and Vista Manufactured by Telesensory Systems Inc 455 North Bernardo Avenue, Moutain View, CA 94043, U.S.A.
5. VTS Reporter and Keynote Manufactured by Wormald International Sensory Aids Ltd 9 Balfour Terrace, P.O. Box 3044, Christchurch, New Zealand