...to the Adaptive Optics Vision Laboratory at the
University Eye Hospital in Bonn, Germany.

We use simultaneous adaptive optics retinal imaging and micro-psychophysics to target and stimulate individual photoreceptor cells of the Human fovea for precise visual function testing.

For more details on our current research projects, continue reading on the Research pages.

News
Welcome!
Impressum
As an introduction to our methods combining adaptive optics scanning laser ophthalmoscopy, AOSLO, and micro-psychophysics, have a look at these book chapters and review articles:
Introduction
Feb 2025:
Trang-Anh and Jenny's manuscript on the role of FEM for the visual brain is published in PNAS. Congratulations!
With our techniques, small visible stimuli can be projected on the retina while we can see their exact motion path relative to the photoreceptors. With a high resolution map of the cellular mosaic, such trajectories can be used to compute the spatio-temporal activation pattern for each cone, and relate this to the psychophysical response.
Read on here:
Witten JL, Lukyanova V, Harmening WM (2024) Sub-cone visual resolution by active, adaptive sampling in the human foveola. eLife, VOR: 2024 Oct 29
[doi:10.7554/eLife.98648.3] [PDF] [Supplement] [Data]
Jul 2025:
Study on temporal synchronization within the fovea with IOBs Annalisa Bucci and Felix Franke published at Nature Neuroscience!
Jul 2025:
Manuscript on our beloved ConeMapper is published in Scientific Reports. Please try it and tell us what you think!
Aug 2025:
New reference data set on human foveolar topography is published in IOVS. Congratulations, Julius!