Articles tagged with Eye
Researchers at the University of Eastern Finland discovered that retinal dopamine concentrations increase before structural degeneration begins, suggesting overactivation of the dopamine system during retinal degeneration. This finding has implications for developing gene therapies and treatment targeting the catecholamine system.
Finnish researchers have discovered that vatinoxan improves anaesthesia safety in rats by inhibiting exophthalmos and improving tissue oxygenation. This breakthrough could spare millions of animals from adverse effects, resulting in more reliable study results and reduced animal numbers.
A simple perception test using standard eye testing equipment can accurately predict the success of laser surgery for age-related vision loss. The test identified 1.66% of patients who were not suitable for the treatment, while 96.9% successfully adapted to their laser blended vision.
Researchers developed a 3D human stem cell-derived retina model to study CLN3-Batten disease, a rare inherited condition causing early vision loss and progressive neurological decline. The model showed that damage to RPE support cells can trigger photoreceptor degeneration, highlighting a complex picture of the disease.
Researchers at Kyushu University found a new molecular pathway that explains why intraocular pressure increases at night. Norepinephrine increases RHOB in the eye's drainage system, weakening its
A study reveals systemic lipid metabolic rewiring in Bietti's crystalline dystrophy, with patients showing distinct plasma lipid signatures and compensatory metabolic network changes. The research also identifies potential blood-based biomarkers for disease monitoring and treatment safety.
A study by Hebrew University researchers found that iron and bromine may contribute to the development of feline corneal sequestra, a condition causing chronic eye discomfort. The findings suggest biochemical processes involving inflammation and oxidative stress may play a role in the disease's progression.
A three-year study found that posterior scleral reinforcement slowed macular fundus tessellation and preserved subfoveal choroidal thickness in children with progressive high myopia. The researchers suggest that PSR may help delay early myopic maculopathy-related changes, possibly through mechanisms beyond axial elongation.
A study found a significant decrease in postoperative endophthalmitis rates after implementing a multifaceted surgical safety culture intervention, from 0.038% to 0.013%. The rate dropped by 64.4% among patients undergoing inpatient ophthalmic surgery.
A randomized clinical trial found that dexamethasone eye drops reduced the progression of retinopathy of prematurity to severe disease requiring invasive treatment in preterm infants. However, no differences in adverse events were observed.
Researchers identified three amino acid changes that account for the 30 nm difference in light absorption between red and green cone pigments, enabling precise color discrimination. The study's findings may inform future drug discovery efforts targeting visual photoreceptors.
A multicenter study found that patients with irregular corneas achieved significant visual acuity improvements after wearing a four-zone scleral lens for three months. The lenses showed encouraging fitting efficiency and patient comfort, with minimal adverse events reported.
Research on ocean acidification's impact on cephalopod brains reveals a 49% reduction in brain volume compared to controls. The greatest reductions were found in visual information-interpretation regions, correlating with significant feeding behavior changes.
A recent study published in Eye Discovery evaluated the early visual quality after KLEx surgery using the VISUMAX 800 platform. The study found excellent safety and efficacy outcomes, with most subjective visual symptoms improving over time. However, glare symptoms persisted longer than expected, highlighting the need for preoperative ...
Researchers have developed contact lenses that can repair themselves with UV light, making them less prone to scratches and damage. The lenses, made from special polymer hydrogels, can be repaired in just one hour of UV light exposure.
A new study revealed that retinal photographs can accurately predict many common risk factors associated with developing Alzheimer's disease. The AI model identified regions of the retina linked to Alzheimer's risk factors, such as arteries and optical nerve, and predicted lifestyle factors like smoking and alcohol use.
By identifying three distinct developmental stages of photoreceptor cells, researchers aim to determine which cell population is most capable of forming neuronal connections in the eye. This may lead to improved treatment outcomes for late-stage blinding conditions through cell-based therapies.
The review highlights the potential of vision and vision-language foundation models in ophthalmology, achieving strong diagnostic performance and adaptability with limited labeled data. However, challenges such as algorithmic bias, overfitting, and limited interpretability remain to be addressed for real-world adoption
The article discusses how AI is unlocking hidden potential in multimodal ophthalmic datasets, enabling high-precision screening and early detection of eye diseases. It highlights the integration of various imaging modalities and non-imaging data types to provide a comprehensive diagnostic framework.
The study utilizes high-sensitivity LC-MS to quantify TCA cycle intermediates in mouse ocular tissues, revealing dual differences in metabolic characteristics based on spatial distribution and biological sex. Key findings include tissue-specific metabolic phenotypes and sexual dimorphism of metabolic profiles.
A study combines polarization-sensitive optical coherence tomography (PS-OCT) with artificial intelligence to reveal subtle corneal changes that standard imaging often misses. The technique improves detection and classification of subclinical keratoconus, enabling earlier diagnosis and more precise care.
The University of Oldenburg is building a unique research facility to study animal navigation and magnetoreception. The NaviGate building will offer conditions worldwide for addressing current questions in animal navigation research, sensory biology, and neurosensorics.
A USC-led team is working on a medical device that uses tears to monitor health, starting with dry eye disease. The device aims to provide continuous monitoring and automated medication delivery, improving patient comfort and treatment efficacy.
Researchers developed a fast, non-invasive, and affordable diagnostic tool using retinal images to differentiate between ALS and Alzheimer's disease. The tool, based on polarized light analysis, accurately predicted disease severity and type with high accuracy.
Researchers at the University of Pittsburgh School of Medicine develop an experimental 'living eye drop' using naturally occurring eye bacteria to accelerate corneal wound healing. The engineered bacteria, Corynebacterium mastitidis, continuously secrete interleukin-10, a protein that regulates inflammation.
The new dynamic shielding layer allows the sensor to focus on specific areas when needed, achieving a 104.56% increase in detection depth. The sensor can also detect approaching objects from over 90mm away, providing a vital split-second for robots to avoid collisions.
A study published in Cornea reveals that aniridia not only alters corneal structure but also affects sensory nerve function, leading to a progressive decline in corneal sensitivity. In adulthood, patients experience difficulty distinguishing stimulus intensity and reduced tear production, compromising eye defense mechanisms.
Pickleball professionals and amateurs showed low use of high-quality protective eyewear, with many relying on personal prescription glasses that may not provide adequate protection. This study underscores the importance of consistent use of well-fitting protective eyewear to prevent pickleball-related eye injuries.
A blind patient partially recovered natural vision through electrical stimulation of the visual cortex, independent of the implant. The recovery was sustained over time and remained even after the device was removed, suggesting individual factors may have contributed to this outcome.
A WVU research team is working to restore vision in people with inherited blindness due to genetic mutations in the Prominin1 gene. The team has observed encouraging early results using a mouse model and plans to investigate the therapy's effectiveness beyond initial restoration.
A large-scale field trial in Ethiopia found no significant difference between fluorometholone and placebo treatments in reducing postoperative trachomatous trichiasis recurrence. The study, which involved over 2,400 participants, suggests that anti-inflammatory therapy may not be beneficial for improving TT surgery outcomes.
Researchers have identified the cells and connections underlying a fish's ability to dynamically change color to match its surroundings. The study found that specialized skin cells called melanophores control the color change, which helps the zebrafish evade predators by lightening its skin over tens of minutes.
Researchers observed significant increase in tear film lipid layer thickness and corneal temperature during VR sessions, suggesting stabilization of the tear film. The study provides early insights for VR headset design and usage considerations related to eye comfort and health.
Researchers at Wayne State University are investigating how eosinophils influence corneal response to infection, focusing on microbial keratitis and potential therapeutic strategies to preserve vision. The goal is to identify new treatments that fight infection while minimizing tissue damage.
Researchers found that female astronauts showed a greater reduction in brain fluid shifts than their male counterparts. Globe flattening, a form of eye compression, was the most consistent eye change among crew members, with males experiencing more frequent changes.
Researchers at the University of Cambridge found that the human eye has a resolution limit, above which screens provide more information than can be detected. For an average UK living room, a 44-inch 4K or 8K TV does not offer additional benefits over a lower resolution Quad HD TV.
The Ebbinghaus illusion shows that perception is not a mirror of reality but a construction of the brain. Research on fish and birds reveals diverse perceptual strategies, with guppies closely mirroring human perception and ring doves showing variability in their responses.
Dr. Kathryn Colby, NYU Langone Health's chair of ophthalmology, has received the prestigious Castroviejo Medal for her pioneering work on Fuchs endothelial corneal dystrophy. Her research explores a new surgical procedure to stimulate corneal regeneration.
The study found that 1-year DMEK success rates were high regardless of donor diabetes status. No restrictions on using tissue from donors with diabetes for DMEK are recommended based on the results.
A significant increase in pickleball-related ocular injuries has been reported among patients presenting to emergency departments. Eye protection guidelines are not currently in place, highlighting the need for standardized measures to reduce the risk of such injuries.
A new dual-imaging system simultaneously maps retinal structure and capillary oxygen levels in live mice, allowing researchers to study vision-threatening diseases like glaucoma and diabetic retinopathy. This non-invasive approach offers a powerful tool for elucidating local capillary values and tracking changes in retinal oxygenation.
Researchers developed AI-powered BlinkWise glasses that track blinking patterns to assess fatigue, mental workload, and eye-related health issues. The device uses radio signals to detect minute eyelid movements with unprecedented detail, preserving privacy and using minimal power.
Researchers at Wayne State University are developing novel therapies to treat ocular chemical injuries using host-derived metabolites. The project aims to reduce inflammation, promote corneal nerve regeneration, and enhance wound healing, with potential for clinically translatable treatments that can preserve vision.
A study found no association between semaglutide treatment and diabetic retinopathy, but suggested a potential link to nonarteritic anterior ischemic optic neuropathy. Further research with larger sample sizes is needed to clarify this risk.
Researchers developed a non-mechanical bioimaging device that uses electrowetting to produce high-resolution images of the retina and cornea. The device has shown promise in detecting eye conditions like age-related macular degeneration and glaucoma, as well as heart disease.
Cohort study finds GLP-1 receptor agonist use associated with modestly increased risk of incident diabetic retinopathy; however, those with preexisting DR experience fewer sight-threatening complications. Regular screening and monitoring recommended for all T2D patients on GLP-1 RAs.
A UCLA team has uncovered new details about the muscle controlling blinking, offering a pathway toward developing blink-assisting prostheses. The orbicularis oculi muscle contracts in complex patterns that vary by action and move the eyelid in more than just a simple up-and-down motion.
Researchers have established apple snails as a system to study eye regeneration, which may hold the key for restoring vision due to damage and disease. The team discovered that the snail eye is anatomically similar to humans and can regrow itself, with genes such as pax6 playing a crucial role in development.
A new treatment for corneal scarring is being developed by University of Houston optometry researcher Tarsis G. Ferreira. The treatment uses a natural protein called decorin to block scarring and unwanted blood vessel growth, offering hope for people with injured corneas.
In a breakthrough study, researchers at the University of Rochester Medical Center found that microglia cells respond differently than neutrophils to photoreceptor damage in the retina. This discovery has high implications for treating vision loss caused by photoreceptor cell damage.
Research finds that mild physical activity affects brainstem dopaminergic and noradrenergic neurons, leading to improved executive function. Blink frequency increases in individuals showing cognitive benefits from exercise.
Dry eye disease affects one-third of adults and one-in-five children, causing discomfort and blurred vision. A new app, MyDryEye, has been developed with optimized blinking exercises that have been shown to decrease symptom severity and frequency, with participants experiencing improved symptoms within two weeks.
Researchers developed stable MXene-coated contact lenses providing enhanced protection against electromagnetic radiation. The lenses exhibited a rapid temperature rise when exposed to microwave heating, indicating strong EMR absorption and dissipation.
A new study by Anglia Ruskin University found that global refractive correction rates are at 65.8%, six percentage points lower than in 2010, and urge urgent action to meet the WHO's target of a 40% increase by 2030.
Researchers found that 90% of participants had at least one sign of dry eye disease, with significant progression after one year. The study highlights the need for early detection and advice on managing the condition through simple methods such as taking screen breaks and maintaining a healthy lifestyle.
A study from Lund University found that migrating freshwater roach have larger pupils and better eyesight than non-migrating individuals. This adaptation enables them to detect small food sources in low-light conditions, crucial for survival during migration.
A cohort study found semaglutide use is associated with a higher risk of nonarteritic anterior ischemic optic neuropathy in people with diabetes. However, the retrospective design limits the study's ability to establish causality, necessitating further research.
A new study published in JAMA Ophthalmology found that lifestyle changes after COVID-19 were associated with an increase in the prevalence and severity of child astigmatisms. The potential impact of higher degrees of astigmatism may warrant dedicated efforts to elucidate the relationship between environmental and/or lifestyle factors.
Researchers analyze gene expression in Retinal Determination Network to identify developmental differences between Tegenaria pagana and other spider species. The study sheds light on evolutionary adaptations in cave environments, including the genetic factors influencing eye reduction.
The study found a notable drop in common ophthalmic procedures following the COVID-19 pandemic, especially laser peripheral iridotomy, which declined significantly in the hardest hit areas of the Northeast. Eye drug injections showed minimal changes during this time.