Mr Tariq Aslam, Manchester Royal Eye Hospital
Dr Ian Murray, University of Manchester
Dr Declan McKeefry, University of Bradford
Prof Jan Kremers, University of Erlangen
Dr Anthony Robson, Moorfields Eye Hospital
Dr Sotiris Plainis, University of Heraklion
Prof Barry Lee, State University of New York
Association for Research in Vision and Ophthalmology (ARVO)
International Colour Vision Society (ICVS)
British Society for Clinical Electrophysiology of Vision
Electroretinograms (ERGs); Visual Evoked Potentials (VEPs); Contrast Sensitivity; Asymmetric colour matching; Reaction times (RTs); Phase lag; Clinical Ophthalmic Electrophysiology
Delphi (mainly); Visual Basic, C, Basic (Historically!)
Head of Ophthalmic Electrodiagnostic service at Manchester Royal Eye Hospital's Vision Science Centre
Honorary Visiting Professor of Vision Science, Faculty of Life Sciences, University of Bradford
Treasurer of the International Colour Vision Society (ICVS)
Board member of the British Society for the Clinical Electrophysiology of Vision (BriSCEV)
BSc (Hons) Human Biology, Surrey, 1984
PhD Human Brain Electrophysiology, Victoria University of Manchester (UMIST), 1992
State-registered Clinical Scientist (SRCS) - HPC registration number CS02686
Silent substitution allows us to stimulate a single class of photoreceptor, and investigate the retinotopic variability of cone density. Recent exciting work is helping us understand the ERG and how responses are coded at a single receptor level. See McKeefry et al (2014); Kremers et al (2011, 2014); Challa et al (2010); Murray et al (2008); Murray et al (2004).
Our novel stimulus contains chromatic and achromatic information. Fourier analysis of the ERG shows the duplex nature of the retina; this is one of the few studies which reveal the properties of the post-ganglionic (M and P) visual pathways, even at an early stage in the visual pathway. See Parry et al (2012b).
We are getting a clearer understanding of peripheral retinal function by seeing how some colours are distorted when they are seen in the periphery. See Parry et al (2006); McKeefry et al (2007); Panorgias et al (2009, 2010, 2012a, 2012b); Murray et al (2012), Parry et al (2012a).
Macular pigment (MP) may protect against age-related macular degeneration (AMD). We use the VEP to measure MP distribution, and have developed a novel 'PIG' stimulus, accounting for MP to improve selectivity in studies of blue-yellow vision. We are investigating how supplementation can affect vision in elderly patients at risk of AMD. See also Robson & Parry (2008).
See Nemes et al (2012).