A new way of taking pictures of the retina could give medics a powerful new tool in diagnosing and monitoring the most prevalent diseases of the eye — glaucoma, diabetic retinopathy, and age related macula degeneration. The technique was revealed today at the Institute of Physics conference Photon 04 in Glasgow.
By 2020 there will be 200 million visually-impaired people worldwide but 80% of these cases are preventable or treatable. For this to happen, screening and early detection are crucial. Sonny Ramachandran, from Heriot Watt University in Edinburgh, outlined a new technique that uses spectral imaging, a non-invasive and safe method of taking pictures of the retina, to study the blood vessels of the eye and reveal the presence or progression of any disease.
They modified a standard ophthalmoscope, adding a liquid crystal tuneable filter, which allowed them to take images of the retina at a series of specific wavelengths. The images are captured by a sophisticated digital camera - a cooled, low noise CCD camera. Image processing corrects for the movements of the eye while the pictures are being taken, and a large set of images are combined in a "data cube" to improve the quality of the resolution.
David Reid | EurekAlert!
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Studying fundamental particles in materials
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Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
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