Dr Petzold is sub-specialised in neuroophthalmology with a joint position at Moorfields Eye Hospital, London, UK and the Departments of Ophthalmology and Neurology at the VU Medical Centre, Amsterdam, NL. He is Director of the Dutch Expertisecentre for Neuro-ophthalmology. Dr Petzold has an interest in translational and clinical research in neurodegeneration. He is particularly interested in combining protein biomarkers for hyperacute neuro-axonal damage (body fluid biomarkers) with structural imaging biomarkers of ensuing atrophy (retinal optical coherence tomography) and clinical outcome.