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  1. Professor John Barbur

portrait of Professor John Barbur

Professor John Barbur

BSc, ARCS, MSc, DIC, PhD

Professor

School of Health Sciences

Mesopic photometry, Colour vision mechanisms / Colour constancy , Blindsight / Pupillometry / Light flux sensing / Aging and vision, Colour-defined motion / Rapid flicker , Disability and discomfort glare

John Barbur is Professor of Optics & Visual Science and Director of the Applied Vision Research Centre at City University London. John trained at Imperial College where he studied Physics, Applied Optics and Vision Science.

Contact Information

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About

John'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. Studies carried out over several years by Prof Barbur and his colleagues at City University London 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.

Expertise

Research Areas: Mesopic photometry, Colour vision mechanisms / Colour constancy , Blindsight / Pupillometry / Light flux sensing / Aging and vision, Colour-defined motion / Rapid flicker , Disability and discomfort glare

Geographical Areas: Western Europe

Awards

  • The Scientific Award (Albrecht-Ludwig-Berblinger Prize) of the German Academy of Aviation & Medicine (2011)
  • Arnold D Turtle Award 2009 (Association of Space & Environmental Medicine)
  • The Walsh-Weston Award for 2008 (from the Society for Lighting Research & Technology)
  • City University London Research Prize (2008)
  • Fulbright Scholarship Award (Fulbright Commission, 1996)
  • The BMA and the Harold Lewis Award for the contribution made to the research film "The Pupil" 1980

Professional Bodies

  • The Optical Society of America
  • The Applied Vision Association
  • The International Colour Vision Society
  • The Pupil Colloquium Society
  • The Colour Group of Great Britain

Research

Professor Barbur's research work is concerned primarily with the analysis and understanding of human vision and has been carried out mainly through psychophysical investigations, non-invasive measurement of involuntary signals, fMRI imaging and mathematical modelling of visual mechanisms.  Recently, John I has concentrated more on the translation of fundamental research findings into industrial and clinical applications. 

Grants

  • 2008-2010, JL Barbur, Sasakawa Foundation Pupil Control Mechanisms and Clinical Applications
  • 2009-2010, JL Barbur, Emerald Fund. Early Detection of AMD and other retinal diseases
  • 2010-2013, JL Barbur, P Raynham (UCL) and A Smith (RH)    EPSRC. Street lighting glare: a study of discomfort glare using light scatter and fMRI
  • 2011-2015, JL Barbur, S Fotios (Sheffield) and P Raynham (UCL)    EPSRC. Optimisation of mesopic illumination for residential streets
  • 2011-2014, JL Barbur and M Rodriguez-Carmona. Colt Foundation Extension of CAD test in occupational environments
  • 2011-2014, JL Barbur, UK Civil Aviation Authority. Minimum Colour Vision Requirements
  • 2011-2014, JL Barbur, Qinetiq Ltd. Effects of altitude hypoxia on visual performance

Research Centres

  • Applied Vision Research Centre, The Wellcome Laboratories for Vision Science

Principal Collaborators

  • C.C. Hull (City University London)
  • D.F. Edgar (City University London)
  • A. Subramanian (City University London)
  • B. Huntjens (City University London)
  • G. Plant (National Hospital)
  • P. Raynham (UCL)
  • S. Fotios (Sheffield)
  • D.Connolly (Qinetiq)
  • D.Osorio (Sussex)
  • M. Michaelides (Moorfields Eye Hospital)

Research Assistants

  • J.A. Harlow
  • Dr Wei Bi

Fellows

  • Dr Marisa Rodriguez-Carmona
  • Dr Gary Bargary

Publications

Journal publications

 

  • J. L. Barbur and E. Konstantakopoulou. Changes in color vision with decreasing light level: separating the effects of normal aging from disease. J Opt Soc Am A Opt Image Sci Vis 29 (2):A27-A35, 2012. doi: 10.1364/JOSAA.29.000A27
  • M. Rodriguez-Carmona, M. O'Neill-Biba, and J. L. Barbur. Assessing the severity of color vision loss with implications for aviation and other occupational environments. Aviat.Space Environ.Med. 83 (No. 1):19-29, (2012).
  • E. Konstantakopoulou, M. Rodriguez-Carmona, J. L. Barbur, "Processing of color signals in female carriers of colour deficiency", Journal of Vision, 12 (2):11, 1-11 (2012).
  • J. L. Barbur and D. M. Connolly, "Effects of hypoxia on colour vision with emphasis on the mesopic range," Expert Rev. Ophthalmol. 6, 409-420 (2011).
  • H. Bridge, P. Jindahra, J. L. Barbur, and G. Plant, "Imaging reveals optic tract degeneration in hemianopia," Invest Ophthalmol. Vis. Sci. 52, 382-388 (2011).
  • F. G. Rauscher, G. T. Plant, M. James-Galton, and J. L. Barbur, "Evidence for Non-Opponent Coding of Colour Information in Human Visual Cortex: Selective Loss of "Green" Sensitivity in a Subject with Damaged Ventral Occipito-Temporal Cortex," Neuro-ophthalmology 35, 1-6 (2011).
  • J. L. Barbur, E. Konstantakopoulou, M. Rodriguez-Carmona, J. A. Harlow, A. G. Robson, and J. D. Moreland, "The Macular Assessment Profile test - a new VDU-based technique for measuring the spatial distribution of the macular pigment, lens density and rapid flicker sensitivity," Ophthalmic Physiol Opt. 30, 470-483 (2010). doi: 10.1111/j.1475-1313.2010.00748.x.PMID: 20883330
  • J. L. Barbur and A. Stockman, "Photopic, Mesopic and Scotopic Vision and Changes in Visual Performance," D. Dartt, J. C. Besharse, and R. Dana, eds., (Elsevier, 2010),  pp. 323-331.
  • D. P. Crabb, N. D. Smith, F. G. Rauscher, C. M. Chisholm, J. L. Barbur, D. F. Edgar, and D. F. Garway-Heath, "Exploring eye movements in patients with glaucoma when viewing a driving scene," PLoS. ONE. 5, e9710 (2010).
  • B. J. Jennings and J. L. Barbur, "Colour detection thresholds as a function of chromatic adaptation and light level," Ophthalmic Physiol Opt. 30, 560-567 (2010).
  • M. O'Neill-Biba, S. Sivaprasad, M. Rodriguez-Carmona, J. E. Wolf, and J. L. Barbur, "Loss of chromatic sensitivity in AMD and diabetes: a comparative study," Ophthalmic Physiol Opt. 30, 705-716 (2010).
  • D. M. Connolly and J. L. Barbur, "Low contrast acuity at photopic and mesopic luminance under mild hypoxia, normoxia, and hyperoxia," Aviat. Space Environ. Med. 80, 933-940 (2009).
  • J. L. Barbur, M. Rodriguez-Carmona, J. A. Harlow, K. Mancuso, J. Neitz, and M. Neitz, "A study of unusual Rayleigh matches in deutan deficiency," Vis. Neurosci. 25, 507-516 (2008).
  • J. L. Barbur and K. Spang, "Colour constancy and conscious perception of changes of illuminant," Neuropsychologia. 46, 853-863 (2008).
  • C. M. Chisholm, F. G. Rauscher, D. C. Crabb, L. N. Davies, M. C. Dunne, D. F. Edgar, J. A. Harlow, M. James-Galton, A. Petzold, G. T. Plant, A. C. Viswanathan, G. J. Underwood, and J. L. Barbur, "Assessing visual fields for driving in patients with paracentral scotomata," Br. J. Ophthalmol. 92, 225-230 (2008).
  • D. M. Connolly, J. L. Barbur, S. L. Hosking, and I. R. Moorhead, "Mild hypoxia impairs chromatic sensitivity in the mesopic range," Invest Ophthalmol. Vis. Sci. 49, 820-827 (2008).
  • E. Dalimier, J. C. Dainty, and J. L. Barbur, "Effects of higher-order aberrations on contrast acuity as a function of light level," Journal of Modern Optics 55, 791-803 (2008).
  • M. Rodriguez-Carmona, L. T. Sharpe, J. A. Harlow, and J. L. Barbur, "Sex-related differences in chromatic sensitivity," Vis. Neurosci. 25, 433-440 (2008).
  • J. L. Barbur, A. Sahraie, A. Simmons, L. Weiskrantz, and S. C. Williams, "Magnocellular and parvocellular visual pathway contributions to visual field anisotropies," Vision Res. 47, 2327-2336 (2007).
  • S. I. Moro, M. L. Rodriguez-Carmona, E. C. Frost, G. T. Plant, and J. L. Barbur, "Recovery of vision and pupil responses in optic neuritis and multiple sclerosis," Ophthalmic Physiol Opt. 27, 451-460 (2007).
  • J. L. Barbur, D. DeCunha, and K. Spang, "Dichoptic studies of instantaneous colour constancy in human vision," (Society for Imaging Science & Technology, Leeds, 2006).
  • J. Kvansakul, M. Rodriguez-Carmona, D. F. Edgar, F. M. Barker, W. Schalch, W. Kopcke, and J. L. Barbur, "Supplementation with the carotenoids Lutein or Zeaxanthin improves human visual performance," Ophthalmic & Physiological Optics 26, 362-371 (2006).
  • M. Rodriguez-Carmona, J. Kvansakul, J. A. Harlow, W. Kopcke, W. Schalch, and J. L. Barbur, "The effects of supplementation with lutein and/or zeaxanthin on human macular pigment density and colour vision," Ophthalmic Physiol Opt. 26, 137-147 (2006).
  • H. C. Walkey and J. L. Barbur, "Guest Editorial: Shedding new light on the twilight zone," Ophthalmic Physiol Opt. 26, 223-224 (2006).
  • H. C. Walkey, J. A. Harlow, and J. L. Barbur, "Changes in reaction time and search time with background luminance in the mesopic range," Ophthalmic Physiol Opt. 26, 288-299 (2006).
  • H. C. Walkey, J. A. Harlow, and J. L. Barbur, "Characterising mesopic spectral sensitivity from reaction times," Vision Res. 46, 4232-4243 (2006).
  • Helen C.Walkey, J. L. Barbur, J. A. Harlow, Antony Hurden, Ian R.Moorhead, and Julie A.F.Taylor, "Effective contrast of colored stimuli in the mesopic range: a metric for perceived contrast based on achromatic luminance contrast," J. Opt. Soc. Am. [A]. 22, 17-28 (2005).
  • T. J. Squire, M. Rodriguez-Carmona, A. D. Evans, and J. L. Barbur, "Color vision tests for aviation: comparison of the anomaloscope and three lantern types," Aviat. Space Environ. Med. 76, 421-429 (2005).
  • J. L. Barbur, "'Double-blindsight' revealed through the processing of color and luminance contrast defined motion signals," Prog. Brain Res. 144, 243-259 (2004).
  • J. L. Barbur, S. Moro, J. A. Harlow, B. L. Lam, and M. Liu, "Comparison of pupil responses to luminance and color in severe optic neuritis," Clinical Neurophysiology 115, 2650-2658 (2004).
  • J. L. Barbur, D. de Cunha, C. B. Williams, and G. Plant, "Study of instantaneous colour constancy in human vision," Journal of Electronic Imaging 13, 15-28 (2004).
  • D. de Cunha, L. H. Eadie, J. L. Barbur, D. J. Hawkes, and A. M. Seifalian, "The effect of image colour distortion on evaluation of donor liver suitability for transplantation," Comput. Biol. Med., 34, 615-632 (2004).
  • J. L. Barbur, "Understanding colour. Normal and Defective Colour Vision" Trends Cogn Sci., 7, 434-436 (2003).
  • JC. M. Chisholm, A. D. Evans, J. A. Harlow, and J. L. Barbur, "New test to assess pilot's vision following refractive surgery," Aviat. Space Environ. Med. 74, 551-559 (2003).
  • J. L. Barbur, N. B. Prescott, R. H. Douglas, J. R. Jarvis, and C. M. Wathes, "A comparative study of stimulus-specific pupil responses in the domestic fowl (Gallus gallus domesticus) and the human," Vision Res. 42, 249-255 (2002).
  • B. J. Wilhelm, H. Wilhelm, S. Moro, and J. L. Barbur, "Pupil response components: studies in patients with Parinaud's syndrome," Brain 125, 2296-2307 (2002).
  • K. Knoblauch, F. Vital-Durand, and J. L. Barbur, "Variation of chromatic sensitivity across the life span," Vision Res., 41, 23-36 (2001).
  • M. Pacheco-Cutillas, J. L. Barbur, and D. F. Edgar, "Comparison of chromatic and achromatic loss of sensitivity in ageing and glaucoma," Ophthalmic Research 33, 87 (2001).
  • H. C. Walkey, J. L. Barbur, A. Harlow, and W. Makous, "Measurements of Chromatic Sensitivity in the Mesopic Range," Colour Research and Application 26, 36-42 (2001).
  • J. L. Barbur, L. Weiskrantz, and J. A. Harlow, "The unseen color aftereffect of an unseen stimulus: insight from blindsight into mechanisms of color afterimages," Proc. Natl. Acad. Sci. U. S. A. 96, 11637-11641 (1999).
  • L. Weiskrantz, A. Cowey, and J. L. Barbur, "Differential pupillary constriction and awareness in the absence of striate cortex," Brain 122, 1533-1538 (1999).
  • J. L. Barbur, A. Sahraie, A. Simmons, L. Weiskrantz, and S. C. Williams, "Residual processing of chromatic signals in the absence of a geniculostriate projection," Vision Res. 38, 3447-3453 (1998).
  • J. L. Barbur, J. Wolf, and P. Lennie, "Visual processing levels revealed by response latencies to changes in different visual attributes," Proc. R. Soc. Lond. B. Biol. Sci. 265, 2321-2325 (1998).
  • P. D. R. Gamlin, H. Zhang, A. Harlow, and J. L. Barbur, "Pupil responses to stimulus color, structure and light flux increments in the rhesus monkey," Vision Res. 38, 3353-3358 (1998).
  • M. L. Hennelly, J. L. Barbur, D. F. Edgar, and E. G. Woodward, "The effect of age on the light scattering characteristics of the eye," Ophthalmic Physiol Opt. 18, 197-203 (1998).
  • A. Sahraie, L. Weiskrantz, and J. L. Barbur, "Awareness and confidence ratings in motion perception without geniculo-striate projection," Behav. Brain Res. 96, 71-77 (1998).
  • J. L. Barbur, C. C. Hull, M. Wakefield, and W. T. Welford, "A novel method for the photometric evaluation of search lights," Meas. Sci. Technol. 8, 117-122 (1997).
  • A. Sahraie, L. Weiskrantz, J. L. Barbur, A. Simmons, S. C. Williams, and M. J. Brammer, "Pattern of neuronal activity associated with conscious and unconscious processing of visual signals," Proc. Natl. Acad. Sci. U. S. A. 94, 9406-9411 (1997).
  • A. Sahraie and J. L. Barbur, "Pupil response triggered by the onset of coherent motion," Graefes. Arch. Clin. Exp. Ophthalmol. 235, 494-500 (1997).
  • A. Sahraie, J. L. Barbur, D. F. Edgar, and L. Weiskrantz, "Motion discrimination of single targets: comparison of preliminary findings in normal subjects and patients with glaucoma," Graefes. Arch. Clin. Exp. Ophthalmol. 234, 553-560 (1996).
  • L. Weiskrantz, J. L. Barbur, and A. Sahraie, "Parameters affecting conscious versus unconscious visual discrimination with damage to the visual cortex (V1)," Proc. Natl. Acad. Sci. U. S. A., 92, 6122-6126 (1995).
  • J. L. Barbur, A. J. Harlow, and L. Weiskrantz, "Spatial and temporal response properties of residual vision in a case of hemianopia," Philos. Trans. R. Soc. Lond B Biol. Sci. 343, 157-166 (1994).
  • J. L. Barbur, R. F. Hess, and H. D. Pinney, "Pupillary function in human amblyopia," Ophthalmic Physiol. Opt. 14, 139-149 (1994).
  • J. L. Barbur, A. J. Harlow, and G. T. Plant, "Insights into the different exploits of colour in the visual cortex," Proc. R. Soc. Lond. B. 258, 327-334 (1994).
  • J. L. Barbur, J. D. Watson, R. S. Frackowiak, and S. Zeki, "Conscious visual perception without V1," Brain 116, 1293-1302 (1993).
  • E. Alexandridis, J. A. Leendertz, and J. L. Barbur, "Methods of studying the behaviour of the pupil," Journal of Psychophysiology 5, 223-239 (1992).
  • J. L. Barbur, A. J. Harlow, and A. Sahraie, "Pupillary responses to stimulus structure, colour and movement," Ophthalmic Physiol. Opt. 12, 137-141 (1992).
  • J. Birch, J. L. Barbur, and A. J. Harlow, "New method based on random luminance masking for measuring isochromatic zones using high resolution colour displays," Ophthalmic Physiol. Opt. 12, 133-136 (1992).
  • J. L. Barbur, "Pupillary responses to grating stimuli," Journal of Psychophysiology 5, 259-263 (1991).
  • L. Weiskrantz, A. Harlow, and J. L. Barbur, "Factors affecting visual sensitivity in a hemianopic subject," Brain 114, 2269-2282 (1991).
  • J. L. Barbur, P. M. Forsyth, and J. M. Findlay, "Human saccadic eye movements in the absence of the geniculocalcarine projection," Brain 111, 63-82 (1988).
  • J. L. Barbur, "Spatial frequency specific measurements and their use in clinical psychophysics," Clinical Vision Science 2, 225-233 (1988).
  • J. L. Barbur and W. D. Thomson, "Pupil response as an objective measure of visual acuity," Ophthalmic Physiol Opt. 7, 425-429 (1987).
  • J. L. Barbur, W. D. Thomson, and P. M. Forsyth, "A new system for the simultaneous measurement of pupil size and two-dimensional eye movements," Clinical Vision Science 2, 131-142 (1987).
  • J. L. Barbur, G. M. Dunn, and J. A. Wilson, "The perception of moving comets at high retinal illuminance levels: a rod-cone interaction effect," Biol. Cybern, 55, 145-158 (1986).
  • J. L. Barbur, B. Hoban, and D. Thomson, "A new photographic-based system for the measurement of contrast sensitivity," Ophthalmic Physiol Opt. 6, 407-414 (1986).
  • J. L. Barbur and P. M. Forsyth, "Can the pupil response be used as a measure of the visual input associated with the geniculo-striate pathway?," Clinical Vision Science 1, 107-111 (1986).
  • J. L. Barbur, I. E. Holliday, and K. H. Ruddock, "The spatial and temporal organisation of motion perception units in human vision.," Acta Psychologica 48, 35-47 (1986).
  • J. L. Barbur, "Speed discrimination and its relation to involuntary eye movements in human vision.," Neuroscience Letters 54, 7-12 (1985).
  • J. L. Barbur and J. E. Saunders, "Displacement thresholds for motion detection under conditions of chromatic adaptation," Ophthalmic Physiol Opt. 5, 5-13 (1985).
  • J. L. Barbur and K. H. Ruddock, "The analysis of scattered light effects in hemianopic and normal vision," Behavioural and Brain Sciences 3, 448-449 (1983).
  • J. L. Barbur, "Reaction-time determination of the latency between visual signals generated by rods and cones," Ophthalmic Physiol. Opt. 2, 179-185 (1982).
  • J. L. Barbur, "Subthreshold addition of real and apparent motion," Vision Res. 21, 557-564 (1981).
  • J. L. Barbur, I. E. Holliday, and K. H. Ruddock, "The spatial and temporal organisation of motion perception units in human vision," Acta Psychol. (Amst) 48, 35-47 (1981).
  • J. L. Barbur and K. H. Ruddock, "Spatial characteristics of movement detection mechanisms in human vision. I. Achromatic vision," Biol. Cybern. 37, 77-92 (1980).
  • J. L. Barbur and K. H. Ruddock, "Spatial characteristics of movement detection mechanisms in human vision. II. Chromatic stimuli," Biol. Cybern. 37, 93-98 (1980).
  • J. L. Barbur, K. H. Ruddock, and V. A. Waterfield, "Human visual responses in the absence of the geniculo-calcarine projection," Brain 103, 905-928 (1980).
  • J. L. Barbur, I. E. Holliday, K. H. Ruddock, and V. A. Waterfield, "Spatial characteristics of movement detection mechanisms in human vision. III. Subjects with abnormal visual pathways," Biol. Cybern. 37, 99-105 (1980).
  • J. L. Barbur, "Quantitative studies of some dynamic visual effects," Perception 9, 303-316 (1980).
  • J. L. Barbur, K. H. Ruddock, and V. A. Waterfield, "A colour dependent abnormality in human visual detection of stimulus motion and spatial structure.," Neuroscience Letters 15, 307-312 (1979).
  • J. L. Barbur, "An arrangement for automatic random stimulus and variable speed of presentation in sensory physiology experiments.," Photobiology Bulletin 1, 138-142 (1979).
  • J. L. Barbur, "A simple 8-channel data logger," Photobiology Bulletin 1,40-50 (1978)


Chapters

 

  • J. L. Barbur and M. Rodriguez-Carmona, "Variability in normal and defective colour vision: consequences for occupational environments," in Colour design: Theories and application, Chapter 2, 24-82. J. Best, ed., (Woodhead Publishing Ltd., Cambridge, 2012).
  • J. L. Barbur, "Learning from the pupil - studies of basic mechanisms and clinical applications," in The Visual Neurosciences, L. M. Chalupa and J. S. Werner, eds., (MIT Press, 2004), pp. 641-656.
  • J. L. Barbur, D. DeCunha, C. B. Williams, and G. Plant, "Experimental studies of instantaneous colour constancy - dynamic colour matching under rapid changes of illuminant," In B. E. Rogowitz and T. N. Pappas, eds., (SPIE-The International Society for Optical Engineering, 2002), pp. 298-314.
  • J. L. Barbur, A. J. Harlow, and C. Williams, "Light scattered in the eye and its effect on the measurement of the colour constancy index," (Kluver Academic Publishers, Dordrecht, 1997), pp. 439-448.
  • J. L. Barbur, V. A. Cole, and G. T. Plant, "Chromatic discrimination in subjects with both congenital and acquired colour vision deficiencies," (Kluver Academic Publishers, Dordrecht, 1997), pp. 211-223.
  • K. Knoblauch, F. Vital-Durand, and J. L. Barbur, "Age-matched comparisons of chromatic thresholds between normal and strabismic observers," (Kluver Academic Publishers, 1997), pp. 271-276.
  • J. L. Barbur, J. Birch, and A. J. Harlow, "Colour vision testing using spatiotemporal luminance masking:  psychophysical and pupillometric methods.," in Colour Vision Deficiencies XI, B. Drum, ed., (Kluwer Academic Publishers, Netherlands, 1996),  pp. 417-426.
  • J. L. Barbur, "A study of pupil response components in human vision.," in Basic and Clinical Perspectives in Vision Research, J. G. Robbins, M. B. A. Djamgoz, and A. Taylor, eds., (Plenum Publishing Company, New York), pp. 3-18 (1995).
  • J. L. Barbur, P. M. Forsyth, and D. S. Wooding, "Eye movements and search performance.," in Visual Search 2, D. Brogan, A. Gale, and K. Carr, eds., (Taylor & Francis Ltd., London, 1993), pp. 253-264.
  • J. L. Barbur and P. M. Forsyth, "The effective contrast of coloured targets and its relation to visual search".  In Visual Search 2, (Taylor & Francis Ltd., 1992),pp. 319-328.
  • J. L. Barbur, P. M. Forsyth, and D. S. Wooding, "Colour, effective contrast and search performance.," in Oculomotor Control and Cognitive Processes., R. Schmid and D. Zambarbieri, eds., (Elsevier Science Pub. B.V., North Holland, 1991), pp. 413-430.
  • J. L. Barbur, "Visual periphery," In Search and the human observer, J. N. Clare and M. A. Sinclair, eds., (Taylor & Francis Ltd., London, 1979),  pp. 100-113.



Students

  • Will Serle. Effects of hypoxia on mesopic vision. Byki Huntgens (Co-supervisor) Qinetiq (Sponsor)
  • Roopa Vemala. Colour vision loss in ARMD. Sobha Sivaprasad (Co-supervisor) Kings College Hospital (Sponsor)
  • Ahmed Abdel-Hay. A study of colour vision in patients with diabetes. Ahalya Subramanian / David Edgar / Sobha Sivaprasad (Co-supervisor) Kings College London (Sponsor)
  • Hanna Gillespie-Gallery. Vision in the mesopic range. Gary Bargary (Co-supervisor) EPSRC (Sponsor)
  • EmilyPatterson. Aging and disability glare. Gary Bargary (Co-supervisor) EPSRC (Sponsor)
  • Yingxin Jea. Discomfort glare in lighting installations. Gary Bargary (Co-supervisor) EPSRC (Sponsor)
  • Hickey Joseph. Colour vision requirements within Air Traffic Control Environment. Marisa Rodriguez-Carmona (Co-supervisor) Colt Foundation, Civil Aviation Authority (Sponsor)

Teaching

  • Responsible for the photometry / colorimetry and lighting sub-modules
  • Responsible for associated laboratory sessions
  • Responsible for supervision of several 3rd year special studies  


Modules taught

 

  • Optometry BSc Part I

Conference Presentations

  • 2013    IX Conferenza del Colore. "Minimising variability in colour vision - consequences for occupational environments" Invited keynote speaker (September, 2013. Florence, Italy)
  • 2013    International Conference of Optometry and Visual Science. "Clinical relevance of advances in vision science during the last ten years" Invited keynote speaker, Braga Portugal.
  • 2013    Society of Occupational Medicine's Annual Scientific Meeting. "Vision standards for visually demanding occupational environments with emphasis on colour vision" (Invited keynote lecture, June 2013)
  • 2013    Colour Group (GB).  "Quantifying variability and changes caused by normal aging in normal trichromacy and congenital deficiency" Invited David Palmer Lecture at the Institute of Ophthalmology (January, 2013)
  • 2012    Leipzig University Eye Clinics. "The use of advanced colour assessment for early detection of retinal disease" (Invited lecture, October, 2012)
  • 2012    Colour Group (GB) - City University London. "Colour in Business and the Professions" (Invited lecture, November, 2012)
  • 2012    Royal Society of Medicine - Colt Foundation Annual Meeting. "Establishing minimum colour vision requirements in visually-demanding occupational environments" (Invited lecture, October, 2012)
  • 2012    Royal Society of Medicine- Annual Defence Services Ophthalmology Meeting. "Colour vision mechanisms and the factors that cause variability in normal and deficient colour vision" (Invited lecture, October, 2012)
  • 2012    Euro-LED 2012 Conference. "Scattered Light, Glare and Visual Performance" (Invited Lecture, June, 2012).
  • 2012    United Kingdom Neuro-Ophthalmology Special Interest Group. "The Colour Assessment and Diagnosis System" (March, 2012).
  • 2012    Institute of Aviation Medicine, Oslo, Norway. "Colour vision in Aviation Course" (Invited lecture, March 2012).
  • 2012    Clinical Neuroscience Dept., University of Oxford, UK. "Light flux detection in human vision - the role of the rod / melanopsin ganglion cells" (Invited lecture, Jan., 2012)
  • 2012    School of Optometry & Vision Sciences, Cardiff University, UK. "Changes in visual function in AMD and mild hypoxia" (Invited lecture, Feb., 2012)
  • 2011    International Colour Vision Society, Kongsberg, Norway. "Clinical applications of colour assessment - separating the effects of aging and disease"  (September, 2011)   
  • 2011    Macular Carotenoids - AMD Meeting, Cambridge, UK. "Clinical applications of colour assessment - separating the effects of aging and disease  (Invited lecture, July, 2011)
  • 2011    National Physical Laboratory, Teddington, UK. "Scattered light, glare and visual performance" (Invited lecture)
  • 2011    Experimental Psychology, University of Oxford, UK. "Variability in colour vision - Separating  normal aging from disease" (Invited lecture)
  • 2011    International Pupil Colloquium, Tuebingen, Germany. "The contribution of the rod / melanopsin ganglion cells to the dynamic pupil light reflex response"
  • 2011    Spanish Aerospace Medical Society, Santander, Spain. "Colour vision assessment in aviation -Standards and certification procedures" (Invited lecture)
  • 2011    The Berblinger Prize Lecturer (German Academy of Aerospace Meeting), Seeheim, 2011. "Colour vision assessment in aviation" (Keynote lecture)
  • 2011    Universit├Ątsklinikum Gie├čen und Marburg, Giessen, Germany. "Aging, AMD and the pupil response" (Invited lecture)
  • 2011    Aerospace Medical Association (AsMA), Anchorage Alaska, USA.  "Assessing the severity of colour vision loss in congenital deficiency" (Invited lecture)
  • 2011    Aerospace Medical Association (AsMA), Anchorage Alaska, USA.  "Clinical applications of colour vision assessment - separating the effects of aging and disease" (Invited lecture)
  • 2011    Emirates Airways, Dubai, UAE. "Colour assessment using the CAD test - description of the work that led to the CAD pass / fail limits for aviation" (Invited lecture)
  • 2010    International Neuro-Ophthalmological Society, Lyon, France. "Effects of hypoxia on contrast acuity, colour vision and the pupil response"  
  • 2010    Maritime and Coastguard Agency Annual Meeting, London UK. "Colour Vision and Visual Acuity" (Keynote lecture)
  • 2010    Netherlands Society of Occupational Health, Arnhem, Holland. "Colour Vision - Fundamental studies and clinical applications" (Keynote lecture)
  • 2010    German Aerospace Medical Society Meeting, Seeheim, 2010. "Colour vision screening and assessment of colour vision loss suitable for certification within the aviation environment" (Invited lecture)
  • 2010    "Trotter-Paterson Memorial Lecture" The Chartered Institution of Building Services Engineers, London UK. "Visual performance in the mesopic range" (Keynote lecture)
  • 2010    Aerospace Medical Association (AsMA), Phoenix, AZ.  "Analysis of European colour vision certification requirements for air traffic controllers" (Invited lecture)
  • 2010    Aerospace Medical Association (AsMA), Phoenix, AZ, USA.  "Estimating the efficiency of the CAD test when used in aviation" (Invited lecture)
  • 2010    Etihad Airways, Abu Dhabi, UAE. "Work that led to the CAD test Pass / Fail limits for aviation" (Invited lecture)
  • 2009    International Colour Vision Society, Braga, Portugal. "Variability in chromatic sensitivity in normal colour vision and in congenital deficiency"    
  • 2009    The International Union of Railway Medical services, Utrecht, Netherlands. "Setting minimum colour vision requirements within visually-demanding occupational environments" (Keynote lecture)
  • 2009    Universitat Politecnica Catalunya, Terrassa, Spain. "Pre-receptoral spectral absorption, healthy ageing and pre-clinical indications of retinal disease" (Invited lecture)
  • 2009    Aerospace Medical Association (AsMA), Los Angeles, USA.  "Rapid procedure for colour vision screening and assessment of colour vision loss suitable for certification within demanding occupational environments"  (Invited lecture)
  • 2008    Optical Society of America Vision Meeting, Rochester, NY.  "Factors that limit chromatic sensitivity in normal trichromacy and congenital deficiency"
  • 2008    Aerospace Medical Association (AsMA), Boston, USA.  "The variability of colour vision: a study of parameters that affect chromatic sensitivity" (Invited lecture)
  • 2007    International Colour Vision Society, Belem, Brazil. "Colour vision assessment in patients with acquired loss of chromatic sensitivity"  
  • 2007    International Colour Vision Society, Belem, Brazil. "A study of the variables that affect the parameters of the Rayleigh match"    
  • 2007    International Pupil Colloquium, Hamamatsu, Japan. "Recovery of visual and pupil response deficits in multiple sclerosis and optic neuritis" (Invited lecture)
  • 2006    International Neuro-Ophthalmological Society, Tokyo, Japan. "Cortical modulation of retinal signals that drive pupil responses in man" (Invited lecture)
  • 2006    Inter Society Colour Council, Ottawa, Canada. "Establishing the statistical limits of normal chromatic sensitivity" (Invited lecture)
  • 2006    National Physical Laboratory, Teddington, UK. "Colour vision and the conspicuity of flashing lights" (Invited lecture)
  • 2006    Royal Television Society Thames Valley Centre Technical Colloquium, Reading, UK. "What the eye cannot see!" (Invited lecture)
  • 2005    Optical Society of America Vision Meeting, Tucson, AZ.  "The assessment of visual performance in the mesopic range" (Invited lecture)
  • 2005    Optical Society of America Vision Meeting, Tucson, AZ.  "Selective Processing of Colour Categories and Other Stimulus Attributes in the Cortex - evidence from clinical studies"
  • 2005    GlaxoSmithKline Advanced Lectures on Clinical and Experimental Neurology, UCL, London. Lecture Series, "Learning from the pupil - studies of basic mechanisms and clinical applications" (Keynote lecture)
  • 2004    The Association of Aviation Medical Examiners, Oxford. "Colour Assessment & Diagnosis - the new CAD test" (Invited lecture)
  • 2004    Medical Physics Dept,  Aberdeen University.  "Light scatter in the human eye and its effect on visual performance" (Invited lecture)
  • 2001    "The Loewenfeld Lecture" - International Pupil Colloquium, Monterey, USA. "Learning from the pupil - Studies of basic mechanisms and clinical applications" (Keynote lecture)


Administrative Roles/Clinical Activity

Administrative roles


  • Member of SHS Research Committee
  • Member of Senate Research Committee
  • Member of EPSRC College of Experts
  • Member of OPO editorial board
  • Reviewer for RCUK, Wellcome Trust, Leverhulme Trust, FFS, etc
  • Reviewer for principal vision related journals