1. Capturing the signals of the dark: Effects of aging and light level on chromatic sensitivity; 2. The contribution of the rod / melanopsin driven ganglion cells to the dynamic pupil light reflex response in humans

1. Capturing the signals of the dark: Effects of aging and light level on chromatic sensitivity
John L. Barbur* and Evgenia Konstantakopoulou
Applied Vision Research Centre, The Henry Wellcome Laboratories for Vision Sciences, City University London, UK

2. The contribution of the rod / melanopsin driven ganglion cells to the dynamic pupil light reflex response in humans
John L Barbur and Wei Bi
Applied Vision Research Centre, City University, Northampton Square, London, UK

RESEARCH INTERESTS

Prof Barbur's research interests cover both fundamental studies of visual mechanisms  as well as applied and clinical research. He has pursued the development of research instrumentation and new measurement techniques and this has resulted in new methods and instrumentation for analysis of pupil response components, spatial vision and chromatic sensitivity and the measurement of scattered light in the eye. The various techniques are based on both visual psychophysics and the measurement of involuntary responses such as eye movements and pupil signals and have been employed to study both applied and clinical aspects of visual processing. Prof Barbur has been closely involved with the activities of the Applied Vision Association, the Colour Group of Great Britain, the International Colour Vision Society, The International Commission on Illumination and has attended regularly meetings on visual science and its applications organized by the Optical Society of America. The studies carried out over several years by Prof Barbur and his colleagues at City University formed the basis for the formation of the Applied Vision Research Centre in 1986. Several students, with both clinical and basic science backgrounds have been trained in Prof Barbur's laboratory over 30 years and have found employment in industry, hospitals and universities.  Professor Barbur is a Fulbright Scholar and spent time as Visiting Professor at the Center for Visual Science at the University of Rochester, N.Y. where he worked on colour vision, visual performance in the mesopic range and adaptive optics. Recent projects include work on the establishment of safe colour vision limits for pilots supported by the Civil Aviation Authority (UK) and the Federal Aviation Authority (USA). http://www.caa.co.uk/caapaper200904

The support Prof Barbur received for laboratory refurbishment from the Wellcome Trust has triggered a significant expansion in research activities and the formation of The Henry Wellcome Laboratories for Vision Sciences at City University. (http://www.city.ac.uk/avrc/members/j.l.barbur.html).

The success of the Colour Vision Laboratory led by Prof Barbur and the important applications of Advanced Vision & Optometric Tests (AVOT) both in the occupational and medical environments triggered the formation of City Occupational Ltd, a company set up by City University to produce AVOT related products and to enable the translation of fundamental research findings into industrial and clinical applications. Prof Barbur and his colleagues provide the research and development support for City Occupational. http://www.city-occupational.co.uk/

Persönliche Angaben