Articles tagged with Retina
Scientists found that sigma 1 receptor helps regulate oxidative stress response in Müller cells, which support the retina. Removing sigma 1 receptor increases levels of reactive oxygen species, leading to vision loss and disease progression.
A new study provides visual simulations of what someone with restored vision might see after undergoing sight recovery therapies, highlighting the limitations of current technologies. The simulations reveal that patients may experience fuzzy or blurred outlines, and temporary visual disappearances.
Researcher Richard Born's team at Harvard Medical School has discovered key principles about how the brain makes sense of visual information. They found that individual neurons are tuned to detect specific motions and relative depth, with a direct bottom-up contribution to these signals.
A genetic mutation in the TEAD1 gene has been identified as the first associated with Aicardi syndrome, a debilitating childhood neurological condition. The study found that children with this disorder experience severe symptoms, including seizures, retina damage, and brain abnormalities, and that boys may also be affected.
A team of researchers has identified a specific neural circuit in the eye's retina that enables motion detection. This discovery could lead to the development of artificial retinas for people with vision loss. The study focused on mice, but similar cells are also found in other species, including humans.
The development of a two-photon ophthalmoscope aims to enhance retina imaging and detect eye diseases earlier, with potential applications in other organs as well. The instrument's super-magnification capabilities could accelerate the discovery of new eye therapies.
Gene therapy for Leber congenital amaurosis improves vision and retina sensitivity within weeks of treatment, with peak benefits after one to three years. However, these gains diminish over six years, revealing the need for further research to sustain restored vision.
A new study demonstrates that gene therapy for Leber congenital amaurosis (LCA) improves vision in patients within weeks of treatment, with benefits peaking at one to three years after treatment. However, the visual gain eventually declines, highlighting the need for future therapeutic strategies to sustain restored vision.
A Rochester team is designing an optical system to image responses of individual cells in the retina, aiming to accelerate vision restoration technologies. The team will collaborate with investigators exploring gene therapy, stem cell replacement, and genetic re-engineering to restore vision.
The National Eye Institute is committing $20.7 million to five bold projects that will develop new technology to image cells of the eye in unprecedented detail. The goal is to restore vision by regenerating neurons and neural connections in the eye and visual system.
The brain uses the sharper image from the less aberrated eye as a reference point to compensate for optical differences between the eyes. This neural mechanism is important for understanding refractive errors and developing effective treatments like monovision for presbyopia.
Researchers at the Technion have confirmed the biological purpose for the seemingly counterintuitive setup of photoreceptors and neurons in the human eye. The retina is optimized for vision purposes, with Müller glia cells concentrating light into photoreceptors.
Researchers developed a new test using magnetic resonance imaging to measure the function of retinal blood vessels and light-detecting cells. This breakthrough enables doctors to detect eye problems earlier, including macular degeneration and after childhood injuries, and may slow disease progression.
A new genetic therapy has restored light response to the retinas of blind mice and dogs, offering hope for future clinical trials in humans. The therapy uses a virus to insert a gene into normally blind cells, followed by photoswitches that activate the cells when exposed to light.
A study published in JAMA Ophthalmology found that teleophthalmology did not result in worse visual outcomes, even though it led to longer wait times for treatment reinitiation. The teleophthalmology approach was cost-effective and reliable for patients with another eye disease, diabetic retinopathy.
Researchers at Hebrew University developed a new light-sensitive film that can stimulate neurons in response to light without using wires or external power sources. This innovative technology has the potential to form the basis of a prosthetic retina for people with retinal damage or degeneration.
A groundbreaking study published in Nano Letters describes a revolutionary novel device that has the potential to treat a number of eye diseases. The proof-of-concept artificial retina is more efficient, flexible, and can stimulate neurons more effectively than previous designs.
Researchers found that the retina can sense infrared light when laser pulses rapidly deliver a double hit of energy, allowing the eye to detect light outside the visible spectrum. This discovery may lead to developing new tools for examining and stimulating the retina.
A study published in Science reports that HIV/AIDS drugs, such as NRTIs, can prevent retinal degeneration in a mouse model of dry AMD by blocking the innate immune pathway called inflammasome. This discovery offers hope for repurposing these inexpensive and safe drugs to treat untreatable conditions.
Researchers developed a wireless, light-sensitive film that can stimulate neurons and potentially treat age-related macular degeneration (AMD). The new device outperforms existing technologies in terms of durability, flexibility, and efficiency.
A gene that regulates blood vessel constriction is linked to aberrant blood vessel growth in premature babies, leading to vision loss. The finding suggests a new therapy to prevent damage and highlights endothelin's role in both blood pressure regulation and blood vessel formation.
Researchers found retinal thinning as an early marker for frontotemporal dementia, prior to cognitive symptoms. The retina acts as a 'window to the brain,' and studying it can track changes in neurons.
Researchers at TUM are developing an artificial retina made of graphene, which converts light into electrical impulses for the brain. The material's excellent biocompatibility and electronic properties provide a promising solution to existing retina implants.
Robert E. Marc, a renowned vision scientist at the University of Utah, has been awarded the Paul Kayser International Award for his significant contributions to understanding vitreoretinal diseases and disorders. The award recognizes Marc's groundbreaking work on retinal mapping and neural pathways.
A new study by UC Santa Barbara researchers demonstrates that a particular neuron creates a 'personal space' in the retina, similar to human behavior. The study identifies a genetic contributor to this feature, pituitary tumor-transforming gene 1 (Pttg1), and shows that it is heritable.
Scientists at Johns Hopkins Medicine have successfully created a three-dimensional complement of human retinal tissue in the laboratory, including functioning photoreceptor cells that can respond to light. The achievement offers new opportunities for vision-saving research and may ultimately lead to technologies that restore vision in ...
Researchers have made significant progress in creating artificial vision that mimics the retina's natural response to movement. By targeting specific cells, they were able to reproduce natural patterns of activity, bringing closer the goal of restoring high-fidelity vision to blind individuals.
A grape-enriched diet resulted in a protective effect on retinal structure and function, with three-fold higher rod and cone photoreceptor responses compared to control diets. The study also found lower levels of inflammatory proteins and higher amounts of protective proteins in the retinas.
Researchers at Johns Hopkins University have discovered a new neural pathway in the eyes that enhances vision, specifically contrast detection. The study reveals that ipRGC cells, previously thought to only detect light for simple functions, play a crucial role in forming visual images.
Scientists have discovered new types of neurons in zebrafish brains that help them perceive and compensate for self-motion. These neurons enable the fish to stabilize their position and gaze during movements, preventing drift in the current.
Researchers at Indiana University have developed a new technique that can detect microscopic changes in the retina caused by diabetes, which may indicate potential sight-threatening complications. The instrument uses adaptive optics to provide highly magnified retinal images and identify subtle changes in blood vessels.
Researchers at Trinity College Dublin made a breakthrough in treating AMD by finding that IL-18 suppresses abnormal blood vessel growth behind the retina. Low doses of IL-18 have shown no adverse effects on the retina, offering a promising non-invasive treatment option.
Researchers have identified a fovea-like region in dogs' retina with high cone density, similar to that of humans, and found it susceptible to genetic blinding diseases. This discovery has promising implications for translational research into human foveal and macular degenerative diseases.
Researchers at UC San Diego discovered that direction-sensing cells in the retina send signals to the cortex, enabling brains to process directional movements. The study has practical implications for understanding and treating disabilities related to motion processing.
Researchers found that moderate aerobic exercise helps preserve retina structure and function after damage. Exercise was shown to have a direct effect on retinal health and vision, potentially leading to tailored exercise regimens or combination therapies for retinal degenerative diseases.
Researchers used computer models to study the melanopsin pigment in the eye, finding it may be more sensitive to light than its counterpart rhodopsin. The study could lead to new technologies and a better understanding of diseases like seasonal affecting disorders.
Researchers at MIT found that the human brain can identify concepts in images presented for 13 milliseconds, challenging previous assumptions about visual processing speed. The study suggests that
Researchers have developed a gene therapy treatment that improves vision in people with choroideremia, a condition causing progressive loss of sight. The treatment showed significant improvements in visual acuity and sensitivity to light in six patients, offering promise for future treatments of other retinal diseases.
A new hand-held optical device can scan a patient's entire retina in seconds, detecting early signs of diabetic retinopathy, glaucoma and macular degeneration. This innovation enables primary care physicians to screen a wider population outside traditional specialist offices.
Researchers have made a breakthrough in printing cells from the human retina using piezoelectric inkjet technology, opening up new possibilities for treating blindness. The study successfully printed two types of cells, ganglion cells and glial cells, which remained healthy and retained their ability to survive and grow in culture.
Research suggests that damage to small blood vessels in the retina and kidneys increases the risk of developing atrial fibrillation, a common type of abnormal heart rhythm. The study found that those with signs of vessel damage were more likely to develop atrial fibrillation than those without.
Researchers found significant loss of neurons in the retina's inner nuclear and ganglion cell layers, suggesting Alzheimer's disease presence. The study suggests a potential new way to diagnose or predict Alzheimer's through eye examination, using optical coherence tomography.
Researchers at Johns Hopkins Medicine have identified a critical gene that guides the separation of two types of motion-sensing cells in the retina, shedding light on cellular layering and its implications for brain function.
Researchers at the University of Pennsylvania have made an encouraging breakthrough in developing a gene therapy to treat macular dystrophy. They successfully delivered a healthy copy of the BEST1 gene to dogs using viral vectors, showing promise for preventing or restoring vision in individuals with these conditions.
Researchers at Caltech developed a new stimulus to study mouse visual behavior, finding that mice respond with immediate reflex-like responses to a looming black disk, freezing or fleeing depending on the environment. The study validates the mouse model for studying visual processing and has implications for understanding animal behavior.
Researchers used a new technique to analyze proteins in an animal model of the rare birth defect, finding hundreds of changes and shedding light on cell death mechanisms. The study provides insights into factors causing SLOS and could be applied to other diseases.
Researchers at MIT and Max Planck Institute have mapped the wiring diagram of a tiny patch of mouse retina using a combination of human and artificial intelligence. They identified 950 neurons, including a new type of retinal cell, and classified most of them based on their connections with other neurons.
Researchers aim to prevent diabetes-related damage to blood vessels in the retina by modulating the arginase enzyme. By stabilizing arginase levels, they hope to restore a healthy relationship between enzymes and reduce oxidative stress. This new approach may not only protect sight but also have broader benefits for cardiovascular health.
A team of researchers at Mass Eye and Ear has created the most comprehensive description of gene expression in the human retina. The study identified over 30,000 novel exons and more than 100 potential new genes that were not previously known to be expressed in the retina.
Researchers develop an engineered virus that can deliver genes to difficult-to-reach cells in the retina, restoring vision to patients with inherited defects and degenerative illnesses. The new therapy is surgically non-invasive and takes only 15 minutes to administer.
Researchers at Lund University have developed a new method to investigate the importance of biomechanical factors in the central nervous system. The study found that when the biomechanical balance is disturbed, as happens in eye diseases such as retinal detachment and glaucoma, the normal function of the retina is lost, resulting in se...
Architected to tackle aquatic prey, archerfish possess exceptional resolving power in the upper part of their retina, far surpassing other freshwater fish. This impressive ability enables them to locate, identify, and accurately spit at aerial insects with remarkable precision.
Researchers at Queen's University Belfast are developing a novel approach to repair damaged blood vessels in the retina using adult stem cells. This innovative therapy has the potential to prevent and/or reverse diabetic retinopathy, reducing the risk of vision loss.
Researchers discovered zebrafish stem cells can selectively regenerate damaged photoreceptor cells, including cones that provide daytime colour vision. This breakthrough could lead to new hope for human eyesight restoration through stem cell therapy.
Researchers at Washington University School of Medicine reprogrammed eye cells to prevent degeneration and allowed mice with retinitis pigmentosa to see. The study aims to develop therapies that can alleviate many forms of visual impairment by modifying existing cells in the eye.
Researchers at UC Berkeley have created an interactive map of the brain's visual organization, revealing that thousands of objects and activities are grouped into semantic neighborhoods. The study may help diagnose brain disorders and improve image recognition systems.
Researchers at Johns Hopkins Medicine have identified a protein crucial for neuron organization in the developing retina, shedding light on how the eye detects light. Additionally, scientists found that a genetic defect can cause a 'traffic jam' in cellular materials within motor neurons, leading to progressive paralysis and death.
A protein pair called Norrin/Frizzled-4 plays a crucial role in managing the blood vessel network that serves the brain and retina. The study reveals a dual role for the protein pair, with one job forming the network's proper architecture during fetal development and another maintaining the blood-brain barrier after birth.
Researchers successfully streamed braille patterns directly into a blind patient's retina using the Argus II device. The patient accurately read four-letter words and showed excellent spatial resolution, demonstrating the potential for improved reading capabilities with future iterations of the implant.
A five-minute eye scan can accurately assess brain damage in people with multiple sclerosis, predicting disease progression. The scan uses optical coherence tomography to measure retinal tissue health, providing valuable information for doctors and patients.