An injection of a specific chemical directly into the eyes can temporarily restore sight in blind mice, suggesting a new therapy for people with vision loss, a new study says. The researchers who discovered the chemical capability are working on an improved version that could someday work in humans.
Retinal implants can let blind people see, but to be truly effective, they should be adapted to the human eye’s unique structure, according to one researcher. Tiny clusters of material that self-assemble into fractals could help with this, strengthening the connections between an implant and a patient’s healthy neurons.
Researchers in Japan have grown a retina from mouse embryonic stem cells in a lab, but this isn’t just another incremental advance in tissue engineering. Scientists claim their “retina in a dish” is by no small degree the most complex biological tissue yet engineered.
Optical signals could be used instead of electrical signals to stimulate cells in the body, scientists say. In a new study, researchers at the University of Utah used brief, low-power light pulses to control the actions of inner-ear cells, potentially leading to therapies that let those with auditory disorders hear the light.
Microchips restore sight in patients with degenerative vision loss
By Katherine BagleyPosted 03.14.2011 at 3:03 pm 0 Comments
More than 100,000 Americans have suffered significant vision loss from retinitis pigmentosa, a genetic disorder that is the most common cause of childhood blindness. Now a team of German researchers, led by neuroophthalmologist Eberhart Zrenner of the University of Tubingen, has developed a microchip that can restore their sight. Within days of receiving the implant, patients can see geometric patterns and letters. Over time, some have developed the ability to tell a fork from a spoon, identify shades of gray, read words, and even detect emotion on people's faces.
Foxes seem to use the Earth’s magnetic field to track down their prey, apparently the only animal to use the field to judge distance as well as direction. A pair of researchers in the U.S. and Germany believe foxes have an innate augmented reality system allowing them to accomplish this.
A blind Finnish man implanted with a special chip in his retina was able to see letters, a clock face and even different shades of gray, according to a new study. The device could represent a new form of vision therapy that relies on patients' own eyes, instead of cameras and synthetic eye components.
Office workers may never have to worry again about viewing hilarious but NSFW images surreptitiously. A pair of glasses developed by Brother Industries can project images or documents directly onto a wearer's retinas.
The Retinal Imaging Display technology displays a small image 10 centimeters wide that appears to float about 1 meter (3.3 ft) in front of a user's eye. Images have an 800x600 resolution and refresh at 60Hz.
Blindness is the most debilitating of sensory impairments, and also the most vexing to cure. Now, MIT scientists have created a new kind of retinal implant that might help reverse the effects of two common forms of blindness. Drawing on the same principles as the cochlear implants that help the deaf, this implant wouldn't restore vision, but could help the blind navigate through everyday situations.
The retina is a lush layered field of tissue lining the back of the eye, a complex mix of specialized cells that serve as a transfer station where light signals are absorbed and sent to the brain to be translated into sight.
Researchers from University of Wisconsin, Madison have now created these unique retina cells from lowly skin cells -- opening the possibility that patients with damaged or diseased retinas might some day be able to grow themselves a cure from their own skin.