Congenital Iris Vessel Crossing The Pupil
Grand Rounds for today is an interesting finding of an anomalous congenital blood vessel that crosses the front of a pupil, relaxing when the pupil is small, and pulling taut when the pupil becomes is dilated. The image above is relaxed with a small pupil. This image shows a wider view with a constricted …
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Remodeled Retina
Interesting Article: On the Perception, Production And Function Of Blue Colouration In Animals
Kate D. L. Umbers has published an interesting manuscript, titled “On the perception, production and function of blue colouration in animals”. Its available for free at the Journal of Zoology here and covers those studies that have proposed a function for blue coloration in the animal kingdom, taking a multi-disciplinary approach before taking you on a …
The iPhone As Camera… Where To Now?
Who’s That? Wolfgang Baehr
This photograph of a young scientist in training is, a young Wolfgang Baehr seen in the Institute for Physical Chemistry at the University of Heidelberg in 1963. Incidentally, one of Wolfgang’s sons is studying at Heidelberg University and looks shockingly like him in this photo. Wolfgang was born in Mannheim, Germany and studied organic chemistry while …
Connectomics Collaboration Visit, Nick and Kristopher
Nov 28, 2012 Penumbral Lunar Eclipse
Interesting Review: Intrinsically Photosensitive Retinal Ganglion Cells
I remember when the first discussion of intrinsically photosensitive retinal ganglion cells (ipRGCs) started coming out. My thinking at the time was: “Wow, cool concept… but how in the world could you stack enough opsins in two membranes to make for any psychophysical perception?” In short, despite some years of predicting their presence, I did …
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Portrait: Yingbin Fu
Secret Societies And The Restoration Of Vision
The desire to restore vision, once lost is as old as man itself. This article by Noah Shachtman in Wired’s Danger Room documents the discovery of a 250 year old code complete with secret society. Its interesting reading from a variety of perspectives and has some wonderful photographs of the text and “blindfold goggles”, but …
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Columbia, Missouri 2012
Interesting Paper: Gene Expression Changes Within Müller Glial Cells in Retinitis Pigmentosa
Retinal degenerations are accompanied by retinal remodeling events. These events alter the structure and function of the retina and involve to a large extent, Müller cells which seem to serve as pathways for neuronal migration. This paper by Karin Roesch, Michael B. Stadler and Constance L. Cepko looks at gene expression changes in the Müller cells, one …