Articles tagged with Eye
Researchers have developed a new approach to see-through displays for augmented reality smart glasses. The design projects images onto the eye using photons and holographic optical elements to form letters and words.
A study published in JAMA Ophthalmology found that US pediatric eye injuries decreased by 26.1% from 2006 to 2014. Most of these injuries had a low risk of causing permanent vision loss. In contrast, sports and household-related injuries increased, while motor vehicle crashes, gun-related incidents, and chemical burns declined.
New study finds that eye dominance and visual acuity are governed by separate areas of the brain, making it possible to correct one without affecting the other. Researchers can now address acuity directly, bypassing normal eye dominance restoration.
A new study led by the NIH identified roles for over two dozen genes shared with humans, many linked to human eye disorders, in causing cavefish blindness. Epigenetic regulation mechanisms have been found to play a key role in this process.
Researchers found guppies rapidly turn their eyes black to warn rivals, making their eyes more conspicuous as an honest signal of aggression. This behavior is seen in larger guppies dominating smaller ones, but not the other way around.
Cavefish have higher levels of DNA methyltransferase DNMT3B in developing eyes, leading to epigenetic suppression of eye development genes. This process differs from genetic mutations, which are permanent changes in the DNA code.
The study found that pupils dilate before reported inspiration, predicting subsequent inspiration. This discovery may lead to externally monitoring and controlling memory retrieval in the future.
Researchers at Michigan Medicine's Kellogg Eye Center report cases of uveal effusions and eye inflammation caused by immunotherapy treatments. Ophthalmologists emphasize the importance of referring patients with eye problems to an ophthalmologist, while oncologists should ask about medications that may be causing symptoms.
Tropical Cyclone Iris' remnants linger in the Coral Sea as NASA's Suomi NPP satellite captures visible images of the low-pressure area. The bulk of precipitation is located in the southern and eastern quadrants due to northwesterly vertical wind shear.
Researchers developed a holographic heads-up display that increases the size of the displayed image, allowing drivers and pilots to see information without shifting their gaze. The technology uses holographic optical elements to redirect light and create a larger eye box, making it easier to view critical data.
Researchers have identified two distinct types of vision-degrading glaucoma and pinpointed key genes associated with the condition. The study also suggests that exercise can help reduce eye pressure and provides a potential new point of intervention for treating glaucoma.
Harvard researchers create an adaptive metalens that controls focus, astigmatism and image shift in real-time, like the human eye. The device is made possible by combining metalens technology with artificial muscle technology, enabling dynamic aberration correction for various applications.
A recent study published in Scientific Reports suggests that the eye is not as immune as previously thought, with some components being accessible to immune cells. This discovery has implications for wound healing and changes in vision such as cataracts, and may change the way we think about eye disorders.
A study found that only one-third of individuals with retinal infarction underwent basic testing, and fewer than one in 10 were seen by a neurologist. This highlights the importance of expediting stroke evaluation testing for those who have experienced a retinal infarction.
Scientists at USC have developed a temperature-sensitive gel that can seal eye injuries, allowing for faster treatment and reducing the risk of complications. The reversible seal can be easily removed with cool water, making it a promising solution for treating ocular injuries on the battlefield.
A new study suggests that augmented-reality technology can improve ocular balance in individuals with amblyopia, a condition where signals between the brain and one eye go awry. The technology, which delivers altered but complementary video to each eye in real time, forced participants to make use of both eyes cooperatively.
Researchers found that blue whales tend to be 'right-handed' when feeding, rolling about 90 degrees to the right side during most lunges. However, they roll to the left when approaching from below to target patches of prey, allowing for more efficient feeding.
A study of firearms-related eye trauma in the US found significant racial disparities, with African Americans making up 35% of patients and suffering greater odds of being assaulted on the street. Whites were more likely to suffer self-inflicted injuries at home, while most common injury locations were the home and the street
A new microdose delivery system achieved comparable treatment effect to conventional eyedrops while delivering less than four times the amount of drug, reducing eye exposure by 75-80%. Microdosing reduced side effects, leading to gentler treatment for patients with glaucoma and other eye diseases.
A Wayne State research team is developing a novel approach to treat bacterial endophthalmitis with Resolvin D1, which has shown promise in reducing inflammation and preventing tissue damage. The study aims to identify new anti-inflammatory therapeutics for the prevention and treatment of blinding ocular infections.
Researchers at IBS have identified a new mechanism involved in glaucoma development and progression, and found a potential therapeutic option to treat primary open-angle glaucoma. The study highlights the critical role of the angiopoietin-Tie2 system in Schlemm's canal functionality.
Researchers developed PupilScreen, a smartphone app that detects changes in pupil's response to light using AI-powered deep learning tools, promising improved diagnosis accuracy for concussion and TBI. The app can be used by coaches, parents, medics, and others on the sidelines of sports games or in emergency situations.
Researchers found that batters follow different visual strategies when swinging versus taking a pitch, with more eye movement when not swinging and larger head movements when swinging. The study provides new insights into batting strategy at the plate.
A study found that 21.4% of infants born to mothers with confirmed Zika virus infection had sight-threatening eye abnormalities, including optic nerve and retinal issues. Screening eye exams are recommended regardless of CNS abnormalities or timing of maternal infection during pregnancy.
Researchers at the University of Illinois have created a new optical mapping 3D display that reduces eye fatigue and discomfort in VR environments. The display method, called OMNI, uses spatial multiplexing to create multiple plane depths with correct focus cues for depth perception.
Tropical Storm Nanmadol was analyzed by NASA using Suomi NPP and GPM Core satellites, revealing a powerful storm with maximum sustained winds of 45 knots. The data showed an eye-like structure at the center of circulation and heavy rainfall rates exceeding 184 mm per hour.
A new study by Michigan Medicine finds that 60% of patients with acute conjunctivitis are prescribed antibiotic eye drops despite antibiotics rarely being necessary. The study also highlights the socioeconomic factors driving this trend and the potential negative consequences of overprescription.
Researchers found biochemical differences in astronauts with vision issues before space travel, suggesting a genetic predisposition. The study suggests that length of time in space may impact eye health and that further research is needed to resolve vision issues for astronauts.
Scientists at the University of Birmingham have developed a painless method to deliver anti-VEGF drugs to the eye, using a cell-penetrating peptide. This innovation has the potential to revolutionize the treatment of age-related macular degeneration (AMD), reducing adverse outcomes and healthcare costs.
The Journal of Ocular Pharmacology and Therapeutics presents novel therapeutic approaches for treating uveitis, including cyclosporine, topical ganciclovir, and regulatory T cell therapy. These advances aim to improve treatment outcomes and quality of life for patients with autoimmune uveitis.
A study by Massachusetts Eye and Ear researchers found that oral promethazine temporarily worsened vestibular perception thresholds by 31 percent. This increase in thresholds could lead to poorer balance performance and a higher risk of falling.
Researchers analyzed 24,000 retinal exams to develop a new screening schedule for people with type 1 diabetes. The findings suggest that adjusting the frequency of eye screenings based on risk could lead to lower costs and quicker diagnosis and treatment of advanced retinopathy.
Researchers at Case Western Reserve University discovered a self-renewing mechanism to help retina sense light using biochemically manipulated vitamin A. This mechanism could lead to improved therapeutics for treating people with vision impairment and other nerve cell disorders.
Earl Smith's research seeks to determine how visual experience affects refractive development and explore new pharmaceutical approaches to eliminate myopia. The goal is to slow the progression of nearsightedness in children, addressing a growing global epidemic that affects over two billion people.
Deep-sea squids have developed unique eyes to spot two different sources of light: ambient sunlight and bioluminescent flashes. The large eye is adapted for gazing upwards, searching for shadows, while the small eye scans downwards for bioluminescence.
A study found a 30-fold increase in eye injuries linked to laundry detergent pods among preschool-aged children in the US between 2012 and 2015. The number of chemical burns associated with these devices rose from 12 instances in 2012 to 480 in 2015.
This review explores the potential of nanoparticle drug delivery systems to improve solubility, permeability, and stability of ophthalmic drugs. The development of these systems may offer a solution to the limitations of traditional topically administered formulations.
A survey of 393 hospital neonatal intensive care units found only 56% believe there are enough ophthalmologists to screen and treat retinopathy of prematurity. Screening can be done with telemedicine, but only 21% of respondents used retinal imaging devices, with half being unsure about its safety.
A recent study published in Frontiers in Aging Neuroscience found that physical exercise can help preserve adult visual plasticity in mice and restore it after a stroke. This suggests that exercise may be used as a preventive or therapeutic approach to aid recovery after a cortical stroke.
A new study found that vestibular thresholds double every 10 years above 40, correlating strongly with poorer balance test results and increased fall risk. Vestibular dysfunction is estimated to cause up to 152,000 American deaths each year, making it a leading cause of death.
A national five-year clinical trial will evaluate new treatment protocols for herpes zoster ophthalmicus, a form of shingles affecting the eye. The trial aims to reduce complications and preserve vision with longer-term suppressive antiviral medication.
Scientists at University of Oxford discovered that ducklings have two separate memory banks for visual information, which can cause internal conflicts. The findings shed light on how birds' brains work, highlighting the differences between avian and mammalian brains.
A study reveals that neurons in the human eye work together to correct errors and improve visual signal accuracy. The research used a mathematical model to analyze retinal ganglion cell activity and found that collective signals are more reliable than individual cell signals.
Researchers recommend a new eye pressure test to check for high eye fluid pressure after cataract surgery, which can cause swelling and vision loss. The test has been shown to reduce the risk of cystoid macular edema by 2.5-4 times.
A study published in JAMA Ophthalmology estimates that approximately 30,000 individuals per year report to US emergency departments with sports-related eye injuries. The majority of these cases involve males playing basketball or baseball, with the latter leading to significant blowout fractures and impaired vision.
A study found that internal astigmatism remains stable over time, contradicting the theory that the lens adapts to compensate for irregular eye shapes. The researchers analyzed 367 individuals with myopia and compared their data to 204 subjects without myopia.
A study by the University of Michigan's Kellogg Eye Center found that low-income children are less likely to be diagnosed with strabismus, a condition that can lead to permanent vision loss if left untreated. The study highlights the importance of ensuring access to eye care professionals and necessary services for all children.
Researchers link vitamin A metabolism to eye fibrosis, finding that retinoic acid triggers fibroblast signaling promoting scarring. Inhibiting aldehyde dehydrogenase may prevent ocular fibrosis.
Research by Johns Hopkins Bloomberg School of Public Health highlights the need to educate the public about preventable chemical eye burns in young children. The study found that one- and two-year-olds are at the greatest risk, with injuries most commonly occurring at home and among those in lower-income households.
Scientists at Hokkaido University measured eye pressure in sleeping patients with obstructive sleep apnea syndrome for the first time, discovering an unexpected correlation between the two conditions. This study sheds light on the potential mechanisms underlying glaucoma development in patients with OSAS.
A new technique developed by Disney Research can capture the crucial details of the eyes with just a single facial scan, producing highly realistic eye reconstructions. The parametric model enables flexible manipulation of the captured data to simulate emotions and fatigue.
Researchers at the University of New South Wales have developed a new eye test that can detect glaucoma four years earlier than current techniques. The patented method involves patients looking at small dots of light of specially chosen size and light intensity, identifying blind spots in the eye and early loss of peripheral vision.
A study found that routine eye exams lead to a change in vision prescription or other changes in care for over half of asymptomatic patients. The study also showed that older patients and those with longer intervals between visits were more likely to experience significant changes.
Research at ASM Microbe meeting reveals a new way bacteria can cause dramatic changes in human cells, leading to contact lens wear complications and inflammation. The study identifies key genes responsible for bleb formation, which may lead to novel therapies to prevent infection-associated inflammation.
Researchers have developed a medicated silicone ring that slowly releases medication over 6 months, potentially lowering the risk of vision loss among seniors with glaucoma. The device reduced eye pressure by about 20% in patients compared to traditional daily drops.
Despite concerns, leading eye specialists find no evidence to suggest lasers pointed at airplane cockpits damage pilots' eyesight. However, the dazzle and distraction from such incidents could prove disastrous during critical moments like landing.
The USC Roski Eye Institute's largest Chinese American eye study found a higher percentage (85 percent) of neovascular or 'wet' AMD among Chinese Americans compared to other ethnic groups. The study also revealed that participants with diabetes were three times more likely to experience significant visual impairment.
Researchers at Stanford University developed a machine to mimic the surface of the eye, allowing for systematic testing of tear film behavior on contact lens surfaces. This innovation could lead to more comfortable contact lenses that protect users from painful dry eye symptoms.
Researchers found a maximum reduction of 52.4% in dry-eye symptoms using the repurposed drug, with some patients reporting complete resolution of symptoms. The treatment has antiangiogenic effects and offers distinct advantages over existing surgical removal methods.
The study, funded by the National Eye Institute, identified FOXC1, TXNRD2, and ATXN2 as contributing genes to primary open-angle glaucoma. Variations in these genes may lead to reduced mitochondrial protection, increasing optic nerve cell death.