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Medical Xpress Ophthalmology News Feed

  • Researchers uncover a critical early step of the visual processResearchers uncover a critical early step of the visual process
    The key components of electrical connections between light receptors in the eye and the impact of these connections on the early steps of visual signal processing have been identified for the first time, according to research published today in Science Advances by The University of Texas Health Science Center at Houston (UTHealth). Read more »
  • A revolutionary new treatment alternative to corneal transplantationA revolutionary new treatment alternative to corneal transplantation
    The team was co-led by May Griffith, a researcher at Maisonneuve-Rosemont Hospital Research Centre, which is affiliated with Université de Montréal and is part of the CIUSSS de l'Est-de-l'Île-de-Montréal. Read more »
  • New eye drops may prevent a common cause of blindnessNew eye drops may prevent a common cause of blindness
    Researchers at Columbia University Irving Medical Center have developed eye drops that could prevent vision loss after retinal vein occlusion, a major cause of blindness for millions of adults worldwide. Read more »
  • Declining eyesight improved by looking at deep red lightDeclining eyesight improved by looking at deep red light
    Staring at a deep red light for three minutes a day can significantly improve declining eyesight, finds a new UCL-led study, the first of its kind in humans. Read more »
  • Researcher's work contributes to a rethinking of what leads to a rare disorder causing blindnessResearcher's work contributes to a rethinking of what leads to a rare disorder causing blindness
    A series of papers published recently by two teams of vision researchers at the University at Buffalo and the University of Alabama at Birmingham (UAB) is revealing important new information about the possible cause of a condition that underlies a rare form of irreversible blindness in young children. Read more »
  • Star-shaped brain cells may play a critical role in glaucomaStar-shaped brain cells may play a critical role in glaucoma
    After a brain injury, cells that normally nourish nerves may actually kill them instead, a new study in rodents finds. This "reactive" phenomenon may be the driving factor behind neurodegenerative diseases like glaucoma, a leading cause of blindness. Read more »
  • Clinicians identify pink eye as possible primary symptom of COVID-19Clinicians identify pink eye as possible primary symptom of COVID-19
    A case of pink eye is now reason to be tested for COVID-19, according to University of Alberta researchers. Read more »
  • Scientists map how human retinal cells relay information to brainScientists map how human retinal cells relay information to brain
    To understand how we see the world and how diseases such as age-related macular degeneration and glaucoma impair vision, scientists need to understand how the retina communicates vision signals to the brain. Read more »
  • Researchers model human stem cells to identify degeneration in glaucomaResearchers model human stem cells to identify degeneration in glaucoma
    More than 3 million Americans have glaucoma, a serious eye condition causing vision loss. Using human stem cell models, researchers at Indiana University School of Medicine found they could analyze deficits within cells damaged by glaucoma, with the potential to use this information to develop new strategies to slow the disease process. Read more »
  • Scientists rescue mini retinas from eye disease via new gene therapy approachScientists rescue mini retinas from eye disease via new gene therapy approach
    Scientists have developed a new gene therapy approach that offers tremendous promise for one day treating an eye disease that leads to blindness and affects thousands of people across the globe. Read more »
  • Retinitis pigmentosa research probes role of the enzyme DHDDS in this genetic diseaseRetinitis pigmentosa research probes role of the enzyme DHDDS in this genetic disease
    Researchers who made a knock-in mouse-model of the genetic disorder retinitis pigmentosa 59, or RP59, expected to see retinal degeneration and retinal thinning. As reported in the journal Cells, they surprisingly found none, calling into question the commonly accepted—though never proved—mechanism for RP59. Read more »
  • Restoring vision by gene therapyRestoring vision by gene therapy
    Humans rely dominantly on their eyesight. Losing vision means inability to read, recognize faces or find objects. Macular degeneration is one of the major causes of visual impairment around the globe; close to 200 million people are affected. Photoreceptors in the retina are responsible for capturing the light coming from the environment. Diseased photoreceptors lose their sensitivity to light, which can lead to impaired vision or even complete blindness. Scientists of the Institute of Molecular and Clinical Ophthalmology Basel (IOB),… Read more »
  • Vision loss influences perception of soundVision loss influences perception of sound
    People with severe vision loss can less accurately judge the distance of nearby sounds, potentially putting them more at risk of injury, according to new research published in the journal Scientific Reports. Read more »
  • Inexpensive retinal diagnostics via smartphoneInexpensive retinal diagnostics via smartphone
    Retinal damage due to diabetes is now considered the most common cause of blindness in working-age adults. In low- and middle-income countries, an eye examination via smartphone could help to detect changes at an early stage. This is shown by a new study carried out by scientists from the University of Bonn together with colleagues from Sankara Eye Hospital Bangalore (India). The results are published in the journal Ophthalmology. Read more »
  • Early visual experience drives precise alignment of cortical networks for binocular visionEarly visual experience drives precise alignment of cortical networks for binocular vision
    Neural networks in the visual cortex of the brain do a remarkable job of transforming the patterns of light that fall onto the retina into the vivid sensory experience of sight. A critical element of this encoding process depends on neurons that respond selectively to features in the visual scene. Edges and their orientation in space carry an enormous amount of information about the visual environment, and individual neurons in the visual cortex encode this information by responding selectively to… Read more »
  • Study finds unexpected suspect in age-related macular degenerationStudy finds unexpected suspect in age-related macular degeneration
    Scientists have identified an unexpected player in the immune reaction gone awry that causes vision loss in patients with age-related macular degeneration (AMD), according to a new study published today in eLife. Read more »
  • Potential new treatment for severe dry eye diseasePotential new treatment for severe dry eye disease
    Scientists have discovered a potential new treatment for a disease that causes severe dry eyes and dry mouth. Read more »
  • AI-supported test for very early signs of glaucoma progressionAI-supported test for very early signs of glaucoma progression
    A new test can detect glaucoma progression 18 months earlier than the current gold standard method, according to results from a UCL-sponsored clinical trial. Read more »
  • New gene therapy for complete color blindness tested in patientsNew gene therapy for complete color blindness tested in patients
    An initial trial in patients indicates that a new genetic treatment for complete color blindness, developed by research groups based in Tübingen and Munich is safe. Preliminary evidence for its efficacy has also been obtained. Read more »
  • Researchers uncover genetic cause behind glaucomaResearchers uncover genetic cause behind glaucoma
    New research has identified a genetic mutation linked to a type of glaucoma, known as primary angle-closure glaucoma (PACG), which could open up new avenues for the early detection and treatment of the disease. Read more »
  • Discovery: Scientists find for the first time how the eyes drain cellular waste and debrisDiscovery: Scientists find for the first time how the eyes drain cellular waste and debris
    Just as the brain is a privileged organ, so too are the eyes. Often poetically called the windows to the soul, a unique set of studies has begun to regard the eyes in another way. Like the brain, the eyes lack the classic lymphatic vessels responsible for the circulation of fluids and removal of waste products, as is common in peripheral organs. In recent years, it was discovered that the brain possesses a unique "glymphatic" system, a privileged brain-only method… Read more »
  • Could your contact lenses track, treat your diabetes?Could your contact lenses track, treat your diabetes?
    Contact lenses may someday do more than correct poor vision, with new, preliminary research in animals suggesting they could also monitor your diabetes and deliver medications. Read more »
  • Very low-dose Avastin effective for preventing blindness in preterm infantsVery low-dose Avastin effective for preventing blindness in preterm infants
    Babies born prematurely who require treatment to prevent blindness from retinopathy of prematurity (ROP) could be treated with a dose of Avastin (bevacizumab) that is a fraction of the dose commonly used for ROP currently. Results from the dose-finding study were published April 23 in JAMA Ophthalmology. The study was conducted by the Pediatric Eye Disease Investigator Group (PEDIG) and supported by the National Eye Institute (NEI), part of the National Institutes of Health. Read more »
  • Study shows glaucoma could be successfully treated with gene therapyStudy shows glaucoma could be successfully treated with gene therapy
    A new study led by the University of Bristol has shown a common eye condition, glaucoma, could be successfully treated with a single injection using gene therapy, which would improve treatment options, effectiveness and quality of life for many patients. Read more »
  • Researchers link age-related DNA modifications to susceptibility to eye diseaseResearchers link age-related DNA modifications to susceptibility to eye disease
    National Eye Institute (NEI) researchers profiling epigenomic changes in light-sensing mouse photoreceptors have a clearer picture of how age-related eye diseases may be linked to age-related changes in the regulation of gene expression. The findings, published online April 21 in Cell Reports, suggest that the epigenome could be targeted as a therapeutic strategy to prevent leading causes of vision loss, such as age-related macular degeneration (AMD). NEI is part of the National Institutes of Health. Read more »
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