RCSV and School of Optometry 45th Anniversary Joint Research Seminar - Fixational eye movements in the absence of central vision
Conference / Seminar
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Date
13 Sep 2023
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Organiser
School of Optometry
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Time
13:10 - 14:00
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Venue
Room P309, PolyU
Speaker
Prof. Susana Chung
Summary
People with bilateral macular disease are known to exhibit much higher fixation instability when compared with people with a normal fovea. The increased fixation instability is attributed to larger amplitudes of ocular drifts and microsaccades. Poor fixation stability has been suggested as a major factor limiting visual performance for people with macular disease. However, given that most people with bilateral macular disease adopt a peripheral retinal location, the preferred retinal locus, for visual tasks, it is also possible that the increased fixation instability and the larger amplitude of ocular drifts and microsaccades are necessary to prevent visual stimuli from fading. To date, the functional consequences of fixational eye movements of people with macular disease remain unclear. In this talk, I will present several studies from my lab to summarize the characteristics of fixational eye movements for people with macular disease; evaluate the relationships between the characteristics of fixational eye movements and visual performance; and empirically determine whether increased or decreased fixation stability could benefit vision for people with macular disease.
Keynote Speaker
Prof. Susana Chung
OD, PhD
Professor of Optometry and Vision Science
University of California, Berkeley
Prof. Susana Chung is a Professor of Optometry and Vision Science at the University of California, Berkeley. She completed her optometry training at the Hong Kong Polytechnic University, and subsequently received an MSc degree in optometry from the University of Melbourne and a PhD in physiological optics from the University of Houston. She then completed her postdoctoral training at the University of Minnesota. Prof. Susana Chung’s work aims to understand how vision is processed in the presence of eye disorders or diseases. She uses a variety of techniques including psychophysics, computational modeling, retinal imaging, and eye tracking in her research. Her research has been continuously supported by the US’s National Institutes of Health since 2000. Prof. Chung has received a number of awards for her contribution to research, including the Constance W. Atwell Award (for excellence in low vision research, by the Low Vision Research Group of the Association for Research in Vision and Ophthalmology, US) and the Irvin M. and Beatrice Borish Award (for outstanding young scientist), and the Glenn A. Fry Lecture Award from the American Academic of Optometry.
