Publications by authors named "R M Donner"
Identifying complex periodic windows surrounded by chaos in the two or higher dimensional parameter space of certain dynamical systems is a challenging task for time series analysis based on complex network approaches. This holds particularly true for the case of shrimp structures, where different bifurcations occur when crossing different domain boundaries. The corresponding dynamics often exhibit either period-doubling when crossing the inner boundaries or, respectively, intermittency for outer boundaries.
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- Statistical physics and dynamical systems theory are essential for understanding high-impact geophysical events, like temperature extremes and cyclones, which arise from deviations in typical geophysical system behaviors.
- Traditional statistical techniques can predict the likelihood of these events but struggle to connect them to the underlying physics of anomalous geophysical regimes.
- The paper discusses this gap in knowledge, highlighting challenges and proposing new approaches, particularly stochastic methods, to improve our understanding of extreme geophysical phenomena.
Spotlight on Amniotic Membrane Extract Eye Drops: A Review of the Literature.
Eye Contact Lens
November 2024
Article Synopsis
- The review aimed to assess how effective amniotic membrane extract eye drops (AMEDs) are in treating ocular surface diseases by analyzing existing literature.
- After searching major databases, 12 out of 1,121 initial studies were deemed suitable for analysis, covering various clinical outcomes and methods of preparation for AMEDs.
- The findings suggest that while evidence quality is not perfect, AMEDs provide improvements for patients with conditions like dry eye disease and corneal wounds, reporting a low incidence of side effects.
Purpose: To evaluate the effect of decreasing barometric pressure on intracameral bubble size and intraocular pressure (IOP) in eyes with varying air fills in the anterior chamber.
Methods: A total of 36 human donor eyes received 30%, 50%, or 90% anterior chamber air fill. The eyes were subjected to decreases in atmospheric pressure down to 750 hPa, equal to 2400 m in altitude, and were repeatedly imaged using anterior segment OCT while IOP was measured continuously.
To evaluate the clinical implications of the different trypan blue dyeing techniques used during liquid bubble (LBT) and manual peel (MPT) DMEK lenticule preparation techniques. This study retrospectively compared the degree to which endothelial cells are preserved using selective Descemet Membrane (DM) staining (LBT) versus bath-staining (MPT) when performed by a single surgeon, sourced from a single eye bank. Endothelial cell density measured after the 3-month follow-up was 1805 and 1916 cells/mm respectively, differing significantly (p = 0.
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