Articles tagged with Retina
A label-free imaging technique has been developed to examine immune cells called macrophages in the retina of healthy humans and patients with glaucoma. Cell density decreased with age in healthy participants, while cell processes moved more quickly and covered a smaller area in patients.
Scientists at Scripps Research Institute have uncovered a potential new strategy for treating eye diseases, including age-related macular degeneration and diabetic retinopathy. A fragment of the protein CITED2 has been shown to reduce neovascularization while preserving healthy blood vessels in mouse models.
The study reveals new details on how the retina works and photoreceptors convert light into nerve signals. Spontaneous calcium flares were discovered in the tips of the outer segment, indicating a functional gradient and a need for turnover.
A new gene therapy using a novel light-sensing protein has restored significant retinal function and vision in blind mice. The therapy involves attaching the MCO1 opsin to retina bipolar cells using gene therapy, allowing treated mice to navigate mazes and detect changes in motion faster than untreated mice.
New research suggests neural implants need to filter out correlated noise in retinal cells to achieve accurate signals, improving performance by 20-100% depending on light conditions
Researchers created a comprehensive single-cell transcriptome atlas of the human retina's aging process. The study reveals regional and cell-type specific differences in gene expression associated with various age-related diseases.
Scientists have created a model that replicates the progression of age-related macular degeneration (AMD), a disease with no current treatment. By understanding how RPE cells respond to stress and changes in gene expression, researchers can now test potential therapeutics for dry AMD.
Researchers used computational simulations to show that spontaneous retinal waves can generate long-range horizontal connectivity in the visual cortex, resolving a long-standing puzzle. The findings suggest that neural circuits must begin developing earlier than sensory input to prepare the brain for vision.
A new study published in Science sheds light on a cellular process in diabetic retinopathy, which could lead to the development of a treatment for this serious complication of diabetes. The research reveals that blood vessels apply molecular brakes to stop abnormal vascular proliferation.
Researchers developed AI-powered software to assess geographic atrophy, a common cause of blindness in industrialized nations. The study found that integrity of light-sensitive cells outside main lesions predicts disease progression.
Scientists at the CRCHUM found that pericytes use tunneling nanotubes to communicate with each other, regulating blood supply and maintaining vision. The study's findings suggest that damaged tunnelling nanotubes may contribute to neurodegenerative diseases like stroke, glaucoma, and Alzheimer's.
Researchers discovered that looking at deep red light for three minutes a day can significantly improve declining eyesight in people over 40. The study found improvements in rod and cone sensitivity, with significant gains in color contrast sensitivity, particularly in the blue part of the spectrum.
A study by Tohoku University's Research Institute of Electrical Communication reveals that visual stability across saccades occurs when parvo-pathway signals suppress magno-pathway signals immediately after a saccade. This finding has implications for AI and robots to perceive the world as humans do.
Researchers at UAB and SUNY-Buffalo found no retinal degeneration in mice with a K42E mutation of the DHDDS enzyme, but massive gliotic activation in their retinas. This challenges the conventional view of RP59 as a congenital disorder of glycosylation.
A new study published in the American Journal of Pathology reports that a single dose of visual chromophore 9-cis-retinal improves visual function in diabetic mice by reducing oxidative stress and cell death. This treatment may represent a potential therapy for early diabetic retinopathy.
Scientists have developed a new gene therapy approach that offers tremendous promise for treating an eye disease that leads to blindness. The collaborative team used a modified virus to deliver a normal functioning copy of the RP2 gene into 'mini retinas' containing the defective version, resulting in significant improvement.
The Hong Kong University of Science and Technology has developed a groundbreaking 3D artificial eye with capabilities surpassing human eyes, offering sharper vision and infrared detection. The innovative design features a nanowire light sensor array that eliminates blind spots and potentially enhances image resolution.
Scientists have developed a gene therapy approach that reactivates visual circuitry in human retinas using near-infrared light, potentially restoring vision in blind patients. The treatment was tested on human retinas kept alive in culture medium and showed promising results.
A study by the University of Bonn shows that smartphone-based fundus imaging can detect diabetic retinopathy with high accuracy, even in early stages. The method allows for efficient screening and diagnosis, enabling trained laypersons to examine patients, reducing hospital visits.
Researchers at Hong Kong University of Science and Technology developed an adaptive optics two-photon excitation fluorescence microscopy system for high-resolution in vivo fluorescence imaging of mouse retina. This breakthrough enables detailed study of retinal structures and dynamics, shedding new light on neurodegenerative diseases.
Researchers at Duke University have developed a new imaging device that can measure the thickness and texture of the retina, potentially providing an early warning system for Alzheimer's disease. The device combines two technologies to spot structural changes in the retina, which could be indicative of the disease.
Researchers found that lixisenatide significantly reduced neuroinflammation in the retina and optic nerve head of mice with early type 2 diabetes. The study suggests a novel therapeutic strategy for preventing visual deterioration in diabetic retinopathy before its clinical manifestation.
Researchers discovered a potential new method to detect age-related macular degeneration using tetracycline staining and fluorescence lifetime imaging microscopy. Tiny deposits of lipids, proteins, and minerals under the retina can be visualized with this technique, offering enhanced early detection.
Researchers at CNIC have identified an inflammatory regulatory circuit controlled by endothelial cells in the eye, which may regulate retinal vascular diseases and inflammatory disorders. The discovery provides new perspectives on treating conditions like age-related macular degeneration (AMD).
A new study from the Joslin Diabetes Center reveals that ultra-wide field (UWF) fluorescein angiography detects over three times more microaneurysms than UWF color imaging, highlighting the need for cautious use of these techniques when evaluating and treating diabetic retinopathy. The research also suggests that AI can automate the gr...
Researchers from the University of Rochester found that fixational eye movements are critical for achieving 20/20 vision. They discovered that even subtle eye movements allow people to read further on a Snellen eye chart than when these movements are absent or impaired.
Researchers developed retina-inspired carbon nitride-based photonic synapses to selectively detect UV light with low energy consumption. The smart systems can modulate exposure to UV rays, making them suitable for applications such as smart windows, glasses, and sensors.
A special issue of Restorative Neurology and Neuroscience reports remarkable progress in treating conditions of partial blindness. Research explores various aspects of vision loss due to diseases like glaucoma or optic neuropathy, with a focus on stop-cell death and induce regeneration to restore vision.
Researchers at UNIGE discovered a new gene linked to blindness and cardiomyopathy, which causes a deficiency in taurine. Administering a taurine supplement halted the progression of eye disease and treated cardiac disease in two children.
In mouse studies, a 'methylation clock' on the ELOVL2 gene ticked toward impaired vision with decreased gene expression, but boosting expression rescued age-related decline in visual function. The study highlights ELOVL2's regulatory role in producing essential fatty acids for healthy retinal function.
A clinical trial is underway to develop a cost-effective biomarker panel that can identify people in the earliest stages of Alzheimer's disease. The study uses retinal screening processes and aims to create a gold standard reference database for early detection.
Researchers discovered that the brain can integrate artificial and natural vision, allowing for partial visual restoration in AMD patients. This breakthrough has implications for future retinal prosthetic devices and brain-machine interfaces.
Researchers have discovered a novel retinal structure in flycatchers that contains megamitochondria and small oil droplets, potentially enhancing their ability to detect and track insect prey. This unique structure is unevenly distributed across the retina and may provide an additional visual channel for these small predatory songbirds.
Researchers discovered a pattern of mechanisms improving retinal oxygen supply that evolved with enhanced vision in all bony vertebrates. The findings add to our understanding of the evolution of the eye, highlighting its dynamic morphology and relationship with retinal oxygen supply.
Research led by Dr. Nicolas Bazan has discovered the critical role of MFRP and Adipor1 proteins in preserving retinal function. The study found that mutations in these proteins lead to retinal degeneration, highlighting their importance in preventing age-related macular degeneration and other eye diseases.
Scientists at the University of California, Berkeley have found evidence that light-sensitive cells in the developing retina are networked and play a more significant role in brain development than previously thought. The discovery suggests that these cells may enhance the influence of light on behavior and brain development.
Researchers developed a retinal hyperspectral imaging technique to detect early signs of Alzheimer's disease. The test scans the retina for biochemical changes associated with the disease, potentially identifying high-risk individuals and facilitating interventions.
Researchers have found a rare toxic reaction caused by high doses of over-the-counter niacin, which can lead to severe vision loss. Discontinuing the supplement reversed the condition and restored retinal function.
Researchers at Salk Institute and UC San Diego developed a novel technique to trace neural connections, enabling them to understand how brain responds to light signals. They found that different time scales affect how neurons communicate with the retina and brain regions.
A new study links common bladder medication Elmiron to a vision-threatening eye condition, finding that about one-quarter of patients with significant exposure show signs of retinal damage. The research highlights the potential for long-term use of the drug to masquerade as other known conditions.
Researchers have made significant progress in developing gene therapy to treat wet age-related macular degeneration (AMD). Six patients have maintained vision after receiving a single intravitreal injection of gene therapy, offering hope for a potential
Researchers have developed a new approach to delivering sight-saving gene therapy to the retina, using a small needle to inject harmless viruses into the suprachoroidal space. This method could provide a more permanent therapeutic option for patients with common diseases such as wet age-related macular degeneration and inherited retina...
The new AR head-mounted display delivers a realistic 3D viewing experience with an enlarged eye-box and increased field of view. It uses pixel beam scanning to keep images in focus regardless of distance, resulting in high-quality images without dispersion.
Researchers at the Complutense University of Madrid have identified areas of the retina that change in patients with mild Alzheimer's disease. The study used optical coherence tomography to measure retinal layer thickness and found significant thinning in certain locations, which can be used to diagnose the disease before other tests.
Researchers at the Netherlands Institute for Neuroscience have found that congenital nystagmus is caused by electrical oscillations in retinal neurons. The study shows that defects in just a few proteins result in erroneous movement signals sent to the brain, leading to the oscillating eye movements characteristic of the condition.
Researchers at the University of Utah Health have made a groundbreaking genetic discovery linking MacTel to HSAN1, revealing that toxic biomolecules deoxySLs cause damage to the macula. The study also found that lipid-lowering medication fenofibrate shows potential in protecting the retina from these biomolecules.
Researchers used a canine model of Leber congenital amaurosis to study the effects of gene therapy on photoreceptor cells. They found that dogs treated before 63% of their cells were lost had lasting improvements, while those treated later experienced continued degeneration.
Researchers at UNIGE identified key genes regulating retinal cell differentiation and axon guidance, offering insights into the construction of vision and potential treatments for neurodegenerative diseases. The study's findings have significant implications for regenerative medicine and could lead to new therapies for optic nerve damage.
Scientists have developed a retina-on-a-chip technology that recreates the human retina's complex tissue architecture, enabling the efficient study of eye diseases and screening for drug side effects. The tool uses living human cells with an artificial tissue-like system, mimicking the body's environment and blood vessels.
A team of Australian scientists has created the world's most detailed gene map of the human retina, providing unprecedented insights into its genetic signals. This will help future research understand the factors that enable cells to function normally and identify the genetic 'mistakes' causing vision loss and blindness.
A new study from Scripps Research provides unprecedented insights into how visual signals are distributed to different brain regions. Researchers discovered that similar proteins travel preferentially to one brain region, while some are transported to multiple regions.
Research published in the Journal of Investigative Medicine found a significant association between AMD and high levels of ambient NO2 and CO. The study, which analyzed data from 1998 to 2010, showed that long-term exposure to pollutants was associated with an almost doubling in risk among those aged 50 and older.
Researchers isolated melanopsin cell functions and demonstrated their importance in perceiving visual environment. The study showed that melanopsin plays a crucial role in detecting light intensity, contributing to a new understanding of the biology of the eye.
Retinitis pigmentosa (RP) is caused by the starvation of photoreceptors due to disrupted glucose transport. Research led by UofL's Douglas C. Dean and Wei Wang found similar metabolic changes in lung cancer.
Researchers found that the retina can rebuild itself after treatment, recovering normal light responses and connections to other neurons. Gene therapy successfully restored rod photoreceptors' function in a mouse model with genetically defective rods.
Phelcom's Eyer uses a portable optical device connected to a smartphone to capture images of the retina for remote diagnosis. The app sends images over the internet to Eyer Cloud, which stores and manages patient files. With an accuracy rate of around 80%, the system has the potential to examine 50,000 patients next year.
A new study reveals that the complement system, part of the innate immune system, plays a protective role in slowing retinal degeneration in a mouse model of retinitis pigmentosa. The research suggests that the complement system helps to clear away dead cells and maintain homeostasis in the retina.
Researchers developed two AI methods that decipher complex gene activity controlling cell fate decisions in retina development, relating this gene activity to other tissues and across different species. The findings provide key insights into human disease and highlight the potential for AI to shed light on cancer treatment.
Scientists discovered differences in Müller cell shape and biology between the retina's macula and peripheral regions, shedding light on the eye's defense mechanism against disease. The study found that macula Müller cells produce more serine, a protective amino acid, but are more susceptible to stress when this production is blocked.
Researchers have identified a cellular mechanism that prevents retinal regeneration in mammals, but allows for regeneration in zebrafish. By manipulating this pathway, it may be possible to restore lost vision by activating the retina's regenerative capacity.