Phillip Bedggood

Measuring red blood cell shape in the human retina

Phillip Bedggood, Yifu Ding, Andrew Metha

Journal article  |  2023  |  Optics Letters

Assessment of photoreceptor function with ultrafast retinal densitometry

Phillip Bedggood, Alexis Ceecee Britten-Jones, Lauren N Ayton, Andrew Metha

Journal article  |  2022  |  BIOMEDICAL OPTICS EXPRESS

The optical density of visual pigment can be measured by imaging the dark-adapted eye while bleaching with visible light. This mea..

Direct measurement of pulse wave propagation in capillaries of the human retina

Phillip Bedggood, Andrew Metha

Journal article  |  2021  |  OPTICS LETTERS

With each contraction of the heart's left ventricle, a pulse pressure wave surges into the aorta and propagates throughout the vas..

Towards distortion-free imaging of the eye

Phillip Bedggood, Andrew Metha

Journal article  |  2021  |  PLOS ONE

The high power of the eye and optical components used to image it result in "static" distortion, remaining constant across acquire..

Retinal hyperspectral imaging in the 5xFAD mouse model of Alzheimer's disease

Jeremiah KH Lim, Qiao-Xin Li, Tim Ryan, Phillip Bedggood, Andrew Metha, Algis J Vingrys, Bang Bui, Christine TO Nguyen

Journal article  |  2021  |  SCIENTIFIC REPORTS

Hyperspectral imaging of the retina has recently been posited as a potentially useful form of spectroscopy of amyloid-beta (Aβ) pr..

Scaling the size of perimetric stimuli reduces variability and returns constant thresholds across the visual field

Phillip Bedggood, Selwyn Marc Prea, Yu Xiang George Kong, Algis J Vingrys

Journal article  |  2020  |  JOURNAL OF VISION

The conventional stimulus for standard automated perimetry is fixed in size, giving elevated contrast thresholds and reduced test ..

Are you sure? The relationship between response certainty and performance in visual detection using a perimetry-style task

Phillip Bedggood, Aiza Ahmad, Adam Chen, Rachael Lim, Sadiqa Maqsudi, Andrew Metha

Journal article  |  2020  |  JOURNAL OF VISION

Conventional psychophysical methods ignore the degree of confidence associated with each response. We compared the psychometric fu..

Recovering the appearance of the capillary blood column from under-sampled flow data

Phillip Bedggood, Andrew Metha

Journal article  |  2020  |  OPTICS LETTERS

The regular spacing of cells in capillary flow results in spurious cell trajectories if the sampling rate is too low. This makes i..

Adaptive optics imaging of the retinal microvasculature

Phillip Bedggood, Andrew Metha

Journal article  |  2019  |  CLINICAL AND EXPERIMENTAL OPTOMETRY

The eye has long been recognised as the window to pathological processes occurring in the brain and other organs. By imaging the v..

Imaging relative stasis of the blood column in human retinal capillaries

Phillip Bedggood, Andrew Metha

Journal article  |  2019  |  BIOMEDICAL OPTICS EXPRESS

Capillary flow largely consists of alternating red cells and plasma whose speed oscillates predictably with the cardiac cycle. Sup..