Lobster Eye Design Informs NASA X-Ray Detector

In a classic case of biology informing other areas of science, we have NASA scientists at Goddard Space Flight Center, Scott Barthelmy, Gerry Skinner and Jordan Camp who have built a new X-Ray astronomy instrument inspired by the design of a lobster eye with long, compound ommatidium or eye-elements that capture light from a wide number of angles. Continue reading “Lobster Eye Design Informs NASA X-Ray Detector”

Iris Changes Complicate Biometric Scans

This is an interesting news article in Nature that describes alterations in the iris in individuals over time.  We’ve always been told that irises do not change as we age, but that simply did not make sense to a number of people I’ve spoken with in the past.  Certainly there were questions of trauma and other changes, but aging itself certainly could have induced changes in the iris. Continue reading “Iris Changes Complicate Biometric Scans”

FASEB Retinal Neurobiology & Visual Processing July 29 – August 4, 2012

The FASEB meeting on Retinal Neurobiology & Visual Processing will be held in Steamboat Springs, Colorado, USA from July 29 – August 4, 2012.

The focus of the meeting is on visual processing in the vertebrate retina, including anatomical, physiological and modeling approaches. In addition, this year we will also discuss the processing of the visual signal after it leaves the retina. The goal of the meeting is to bring together visual and retinal processing experts from all over the world to facilitate a wide exchange of ideas and concepts and to evoke stimulating discussions about the complex mechanisms that underlie visual processing. Continue reading “FASEB Retinal Neurobiology & Visual Processing July 29 – August 4, 2012”

Pupilloplasty

The pupil is the aperture through which light passes into the eye and is created by the circular ring of thin muscles known as the iris.  These images are from a pupilloplasty made with a 10.0 prolene suture.  Pupilloplasties are designed to reconstruct the shape of the pupil, typically after traumatic damage or other surgical procedures that alter the pupils shape.  A damaged or non-functional pupil due to trauma can result in substantial visual glare and inability to properly adjust the amount of light entering the patients eye, so surgical repair is of substantial benefit. Continue reading “Pupilloplasty”

Photovoltaic Retinal Prosthesis With High Pixel Density

Retinas are complex systems and engineered rescues of vision loss through bionic means have to date been inelegant solutions.  Retinal bionic implants have historically not been successes due to some glaring problems including how to power them and how to get the appropriate current close enough to the cells to induce a response.  However, researchers at Stanford University and University of California, Santa Cruz have now developed a photovoltaic retinal prosthesis that is wirelessly powered which eliminates one of the biggest hurdles on the viability of bionic Continue reading “Photovoltaic Retinal Prosthesis With High Pixel Density”

Preventing Vision Loss in Murine Diabetes by Vascular Stabilization

This poster was presented today at the Association for Research in Vision and Opthalmology (ARVO) meetings in Ft. Lauderdale, Florida by Judd M. Cahoon, Hironori Uehara, Ling Luo, Jacquelyn M. Simonis, Britt Dubil, Tadashi Miya, Paul R. Olson, Kortnie Walker, Bonnie Archer, Peter Barabas, David Krizaj, Gou Young Koh, Guangping Gao and Balamurali K. Ambati.  Full size poster can be seen here.

 

 

Shifting expression of Membrane Vascular Endothelial Growth Factor Receptor-2 (mVEGFR2) to Soluble Vascular Endothelial Growth Factor Receptor-2 (sVEGFR2) Reduces CNV Volume and Tumor Growth

This poster was presented today at the Association for Research in Vision and Opthalmology (ARVO) meetings in Ft. Lauderdale, Florida by Brian C. Stagg, Hironori Uehara, Bryce Radmall, Taylor Bates, Christina Mamalis, Leah Owen, Yang Kyung Cho, Tadashi Miya and Balamurali K. Ambati..  Full size poster can be seen here.