Senior research optometrist Moorfields Eye Hospital, London, 1978-1980. Director clinical research Hydron Research Ltd., 1980-1984. Director clinical research cornea and contact lens research unit School of Optometry, University New Son of Wales, Sydney, Australia, 1984-1986.
Director Contact Lens Research Consultant, London, since 1987. Maitre de conférences, associate professor University Paris, Orsay, France, since 1995. Academy and research advisor Ecole Superieure d'Optometrie Bures-sur-Yvettes, France, 1986-1988.
Managing director Optometric Technology Group Ltd., London, since 1987. Director research Institute Optometry, London, 1988-1990. Coordinator optometric program License d'Optometrie et d'Optique Physiolog., University Paris, Orsay, France, 1988-1991.
Director optometric and contact lens program and research, MST d' Optometry, d'Optic Physiologique et d'Optique de Contact University Paris-Orsay, France, since 1990. Associate professor University Paris, Orsey, since 1996. Active in many conferences and science meetings.
Member Society Francaise d'Optique Physiological, British Contact Lens Association (treasurer research trust 1980-1981, council member, chairman optometric section 1982-1984, honorary treasurer and chairman optometric section 1983-1984), British Association Young Optometrists (chairman 1979-1980), British Standard Institute (member committee technical group contact lenses 1978-1983, 87—), Association Optical Practitioners (secretary London and Middlesex Branch 1979-1981), International Society Contact Lens Research (assistant secretary ex officio council member 1980-1982, secretary, member of executive 1982-1990, vice president, member of executive 1990-1995, president elect 1995-1997, president 1997-1999, member of executive since 1999), American Optometric Association (sports section), International Association for Contact Lens Educators (president Europe region, member of executive since 1993), Association for Research Vision, Ophthalmology, others.