Dr Matt J Dunn

Dr Matt J Dunn


+44(0)29 208 70576


My principal research interests are in visual perception, oculomotor neurophysiology and experimental psychophysics. I have a particular focus on understanding the neuropsychology underpinning perceptual experience in infantile nystagmus. Much of my work involves eye and/or body tracking, combining new technologies with classical psychophysical methods to understand the complex relationship between perception and action. As an optometrist, I typically recruit patients with orthoptic or perceptual disorders to better understand visual physiology. I am also the author of the popular ophthalmology e-textbook Dunn Vision Reference.

Professional memberships

  • GOC registered optometrist
  • Fellow, Higher Education Academy (FHEA)
  • Member of the College of Optometrists (MCOptom)

Previous academic positions

  • 2014: Research Associate, Department of Neuroscience, Cardiff and Vale University Local Health Board
  • 2013 – 2014: Research Associate, School of Psychology, Cardiff University
  • 2010 – 2013: Clinical supervisor, School of Optometry and Vision Sciences, Cardiff University

Speaking engagements

  • 2015: Midland Peripatetic Group for Teachers of the Visually Impaired (Birmingham, UK) – "Seeing with nystagmus"
  • 2015: LV Prasad Eye Institute (Hyderabad, India) – "Visual perception in infantile nystagmus"
  • 2015: Public lecture (Chepstow, UK) – "Neuroscience of visual perception"
  • 2015: UC Berkeley (California, US) – "Visual perception in infantile nystagmus"
  • 2015: University of Houston (Texas, US) – "Visual perception in infantile nystagmus"
  • 2015: Orthoptics Decoded (Madurai, India) – "Orthoptic treatments for nystagmus" (session moderator) / "Supranuclear gaze palsies"
  • 2015: Nystagmus Network International Research Workshop (New Orleans, Louisiana) – "Visual timing in infantile nystagmus"
  • 2015: ARVO Annual Meeting (Denver, Colorado) – "Visual processing in infantile nystagmus is not slow"
  • 2014: Public lecture (Chepstow, UK) – "Psychophysics and perception"
  • 2013: Nystagmus Network International Research Workshop (Abingdon, UK) – "Appropriate measures of visual performance in infantile nystagmus: Acuity is not enough"
  • 2013: European Conference on Eye Movements (Lund, Sweden) – "Involuntary saccade initiation is related to the timing of voluntary saccades in infantile nystagmus"
  • 2013: ARVO Annual Meeting (Seattle, Washington) – "Visual acuity in infantile nystagmus in the absence of image motion"

I am registered as a STEMnet ambassador, and provide public talks on vision science and perception.

I teach clinical optometry and orthoptics, and have previously delivered the Visual Perception lecture series at Cardiff University. I am recognised as a fellow of the Higher Education Academy (FHEA).

Modules currently taught

  • OP3205 – Occupational Optometry, Law and Business (module leader)
  • OP3103 – Binocular Vision
  • OP3101 – Primary Eye Care
  • MATLAB programming (staff & postgraduate training course)

Modules previously taught

  • OP2206 – Colour Vision and Perception (module leader)
  • OP3106 & OP2207 – Visual Perception (module leader)
  • OP0205 – Introductory Optometry
  • OP2104 – Binocular Vision
  • OP2103 – Investigative Techniques

Current projects include investigations into:

  • Spatial and temporal constraints of visual perception in infantile nystagmus
  • The role of classical conditioning in perception
  • Biometric correlates of post-saccadic oscillations
  • Clinical software for oculomotor pathology assessment
  • The effect of unilateral visual neglect on walking
  • Simulations of visual pathology in immersive virtual environments
  • Voluntary and involuntary eye movement interaction
  • Binocular vision in infantile nystagmus

Project Supervision

PhD students (with anticipated completion year)

2017 James Brawn

Evaluating eye movements as biomarkers for monitoring the progression of Huntington's Disease to facilitate early intervention and clinical management

Undergraduate projects

2015 Katherine Ward
Binding hand movements to visual percepts

2012 Nicolé Hockings
Comparison of the parvo- and magnocellular pathways of individuals with infantile nystagmus

2012 Elan Jones
The influence of the direction of target displacement on the saccadic parameters of infantile nystagmus

2012 Laura Wood
Eye movements during REM sleep

2011 Nicola Cassels
Exploring the relationship between brain activity and the oscillatory eye movements of infantile nystagmus: A possible basis for therapy


MJ Dunn (PI) & SK Rushton, £810 Binding hand movements to visual percepts, CUROP, 2015

MJ Dunn, £19,573 Understanding binocular vision in infantile nystagmus, College of Optometrists, 2014

MJ Dunn (PI) & JT Erichsen, £14,552 Establishing clinical measures of temporal visual function in infantile nystagmus, Nystagmus Network UK, 2014

MJ Dunn (PI) & JT Erichsen, £1,500, Nystagmus analysis software development grant, Nystagmus Network UK, 2013

Research Collaborators

Prof. Chris Harris, Centre for Robotics and Neural Systems, Plymouth University: Visual Perception in Infantile Nystagmus

Dr Sam Hutton, School of Psychology, University of Sussex: Biometric Correlates of Post-Saccadic Oscillations

Prof. Jonathan Erichsen, School of Optometry and Vision Sciences, Cardiff University: Temporal Visual Function in Infantile Nystagmus

Prof. Simon Rushton, School of Psychology, Cardiff University: Visual Guidance of Walking