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Overview

In my PhD I am using basic and clinical psychophysics to investigate visual crowding, which is a fundamental limit on perception in peripheral vision and cluttered scenes. Visual crowding arises from neural processing of visual input and has been implicated in a number of conditions affecting vision. By understanding the mechanics of visual crowding and the psychology of vision, we are able to unravel how the brain makes sense (or sometimes, nonsense) of the world we see.


Educational and Professional Qualifications


2016: MCOptom, The College of Optometrists
2014: BSc (Hons) Optometry, Cardiff University


Employment History


2016 - 2018: Optometrist, Pembroke Dock
2014 - 2016: Pre-registration optometrist, Pembroke Dock


Professional Memberships and Registration


Member of the College of Optometrists (MCOptom)
Registered with the General Optical Council (GOC) Reg. no. 01-29248


Public Engagement


Brain Games 2019, National Museum Cardiff, Volunteer Demonstrator

Research

Research interests

Visual crowding is the main cause of difficulty seeing targets (such as letters) clearly when other elements are nearby. Try it yourself, cover one eye and focus on the + in the middle. Notice it is easier to see the letter E on the left than the letter P on the right.


http://eccentricvision.com/Research_files/Crowded%20Letters%20DemoImage.jpgThis is just one example of the effects of visual crowing - despite all the letters being the same size, it is harder to make sense of letters in our peripheral vision when they are grouped closesly together. This same effect happens with numbers, colours, movement and even faces. In my research I use specific shapes and tests to measure exactly what we see when those shapes become 'crowded', and link these effects to processes in the brain.


Research Team


Dr Tony Redmond (Primary supervisor: School of Optometry and Vision sciences, Cardiff University)
Dr Jennifer H Acton (Second supervisor: School of Optometry and Vision sciences, Cardiff University)
Dr John A Greenwood (Third supervisor: UCL Experimental Psychology, London)
Prof James E Morgan (Collaborator: School of Optometry and Vision sciences, Cardiff University)


See Professor Morgan talk about the importance of research here: Embedded video


Research Experience


2013: Wellcome Trust Biomedical Vacation Scholar, Cardiff University (Supervisor: Dr T Redmond)


Funding and awards


Wellcome Trust Biomedical Research Scholarship, 2013 (Supervisor: Dr T Redmond). £1,440

Teaching


  • OP1201 Basic Clinical Techniques, Clinical Tutor

  • OP0204 Optometric Physics, Practical Demonstrator

  • OP3202 Low Vision and Contact Lenses, Clinical Tutor

Supervisors

TonyRedmondAlt

Dr Tony Redmond

Senior Lecturer, Director of Postgraduate Research

Jennifer Acton

Dr Jennifer Acton

Senior Lecturer & Director of Recruitment and Admissions