Identifying people is a fundamental skill and special areas of the brain are hard wired for recognising faces. Non-subjective artificial recognition of individuals has become increasingly important. The recent advent of computerization for facial recognition can be used to identify a person on an image. More accurate identification can be obtained by analysis of the iris but this requires co-operation of the individual. Discrimination between people can also be undertaken remotely, by analysing their retinal images.
Professor Marshall describes these new techniques and their controversial applications.
John Marshall is the Frost Professor of Ophthalmology, in the Wolfson Centre for Age-Related Diseases (CARD) in the School of Biomedical & Health Sciences, and Chairman of the Academic Department of Ophthalmology, at St Thomas' Hospital. He was formerly Sembal Professor of Experimental Ophthalmology at the Institute of Ophthalmology (1982-1991).
His research over the past forty years has covered a range of ocular problems but has concentrated on the inter-relationships between light and aging, the mechanisms underlying age-related, diabetic and inherited retinal disease, and the development of lasers for use in ophthalmic diagnosis and surgery. This work has resulted in almost 400 research papers and numerous book chapters and books.
He invented and patented the revolutionary Excimer laser for the correction of refractive disorders with in excess of 30 million procedures now having been undertaken worldwide. He also created the world's first Diode laser for treating eye problems of diabetes, glaucoma and aging.
Professor Marshall is editor and co-editor of numerous international journals.