Articles tagged with Blindness
A team of experts from the University of Manchester and Imperial College London discovered a gene called melanopsin that causes nerve cells to become photoreceptive. Activating this gene in non-light-sensitive cells makes them sensitive to light, which may provide a new approach to treating visual loss.
Scientists at Imperial College London and the University of Manchester have discovered a way to activate melanopsin, a gene that makes nerve cells responsive to light. This breakthrough could lead to new therapies for forms of blindness such as retinitis pigmentosa.
Blind individuals with superior localization skills exhibit increased activity in the visual cortex while performing monaural tasks. This suggests that the visual cortex is specifically recruited to process subtle monaural cues more effectively.
Researchers found that engineered fruit flies with resistant rhodopsin protein retained vision twice as long as normal flies, but eventually developed blindness due to delayed decay of rhodopsin. The study suggests that degradation of visual proteins contributes to vision loss and may help reduce blindness severity in rare individuals.
Researchers discovered that constant light causes visual impairment through a separate mechanism from retinal degeneration. A decline in rhodopsin concentration leads to blindness, and inhibiting its degradation may reduce the severity of visual impairment.
A University of Utah study suggests that a type of cellular waste may be responsible for a form of blinding eye disease called retinitis pigmentosa. The researchers found that a mutation in the carbonic anhydrase 4 gene can lead to photoreceptor degeneration, highlighting the potential for new treatments targeting this process.
Researchers have created a system that detects pedestrian crossings in front of a person using a single camera, measuring road width and traffic light color to ensure safe crossing. The device uses projective geometry and 'projective invariant' calculation to accurately detect crossings in images.
A recent study has identified PITX3 gene mutations as a significant cause of congenital posterior polar cataracts in four unrelated families. This finding offers new hope for preventing and treating this condition, which is the leading cause of blindness globally among children. The researchers believe that identifying these gene mutat...
A Université de Montréal study reveals that early- and late-onset blind subjects excel in spatial hearing tests, distinguishing sounds from ambient noise. This improvement may stem from increased time spent developing the sense of hearing and compensatory cortical adaptations.
Research reveals that both early- and late-onset blind individuals possess supra-normal auditory abilities in far-space, surpassing those of sighted subjects. This challenges the long-held belief that only early-blind individuals can develop superior spatial hearing skills.
The Schepens Eye Research Institute will combine forces with experts from other biomedical and technological fields to develop a center for curing eye diseases, including age-related macular degeneration and diabetic retinopathy. The three-year grant will fund the planning and piloting phase of an interdisciplinary research center.
A new portable device called the Newton TM has been developed to detect glaucoma, a leading cause of blindness. The device is more accurate than previous models and can be used in various positions, making it ideal for early detection and treatment.
Researchers found that 'early blind' subjects excelled in recognizing changes in pitch, a skill impaired in both sighted and late-blind individuals. This study demonstrates the brain's capacity for reorganization in response to early sensory loss.
A study found latanoprost to be safe and well-tolerated in reducing intraocular pressure (IOP) for patients with primary open-angle and exfoliation glaucoma. The researchers also reported a mild incidence of increased iris pigmentation, primarily affecting patients with green-brown or yellow-brown eyes.
Researchers induced temporary blindness in six volunteers with normal vision to study how the brain processes visual information for basic eye movements. The results show that part of the older visual system still functions by encoding visual information unconsciously.
Researchers at Stanford have developed a chip that uses chemicals to stimulate neurons, offering new possibilities for treating age-related macular degeneration. The device has the potential to deliver small amounts of drugs precisely where they're needed and enable real-time chemical analysis of living tissues.
Glaucoma is a group of disorders that progressively damage the optic nerve, affecting 66 million people worldwide. Early detection through comprehensive eye assessments, including optic disc examination, is crucial for limiting vision loss and advancing treatment. Current therapies can limit vision loss if identified in early stages.
A study found that prolonged sun exposure, especially in teens and 30s, increases the risk of age-related maculopathy. Wearing hats and sunglasses also reduces this risk by half.
A study estimates that 937,000 Americans are blind, with white persons affected by age-related macular degeneration. The prevalence of visual impairment is expected to increase due to aging, with blacks and Hispanics more likely to be affected by cataracts and glaucoma.
Diabetic retinopathy, a leading eye complication in people with type 1 diabetes, affects nearly 774,000 Americans under age 30. The prevalence is highest among 40-49 year olds and older, driven by aging US population.
Researchers found that statin use was associated with a 50% reduced risk of developing wet AMD, while aspirin use was linked to a 40% lower risk. The study suggests that these medications may prevent irreversible vision loss in older adults.
The study projects that vision loss from eye diseases will reach 5.5 million Americans by 2020, with age-related macular degeneration, glaucoma, and cataract being the most common causes. Regular comprehensive eye exams are crucial for preventing and/or delaying eye disease in those at higher risk.
The prevalence of age-related macular degeneration (AMD) is estimated to be 1.47% in the US population aged 40 and older, with an expected increase to 2.95 million cases by 2020. The risk of AMD increases dramatically with age, especially among white individuals.
A portable, wearable device called Tyflos enables visually impaired individuals to conduct daily tasks efficiently. The device uses computer vision and robotics technology to convert images into audio information, allowing users to navigate and interact with their environment.
A new study reveals uveitis is more prevalent than previously estimated, with nearly 1,000 patients in northern California affected. The disease affects over 280,000 people in the US each year, leading to 30,000 new cases of blindness annually.
Children with optic nerve disease are up to 20 times more likely to experience excessive daytime sleepiness due to disruptions in their body's internal clock. Researchers found that the loss of a specific type of cell in the retina, which helps regulate light exposure, is directly linked to sleep disturbances.
Researchers found that early treatment reduced the likelihood of poor vision from 19.5% to 14.5% and structural damage from 15.6% to 9.1% in high-risk premature infants. The study, published in the Archives of Ophthalmology, identified risk factors for ROP and showed that prompt treatment can prevent severe vision loss.
A large study found that consuming higher amounts of dietary fats, particularly vegetable and animal fats, was associated with an increased risk of progression to advanced age-related macular degeneration. In contrast, fish and nut consumption reduced the risk of AMD progression.
A recent study on sensory interaction found that the brain amplifies information from sight and smell when they fit together well, leading to a stronger perception of odors. Additionally, research on blind individuals revealed that their sense of touch is not inferior to sighted people's, contrary to popular belief.
Childhood visual impairment and blindness in the UK are more common and severe than assumed, often linked to complex disabilities and increased mortality rates. The study highlights the need for new interventions to address this largely insurmountable burden of blinding eye disease in industrialized countries.
Researchers at McGill University Health Centre identify two key gene mutations in French-Canadian families with retinitis pigmentosa. The study reveals variable and severe symptoms, including hearing loss. The breakthrough promises new screening and diagnostic tests for affected families.
Researchers have identified a molecular understanding of the abnormal proteins causing retinitis pigmentosa, a degenerative eye disease. They will now focus on designing effective drugs to delay disease progression by stabilizing the mutated rhodopsin protein.
Researchers discovered that visually impaired individuals like Michael May struggle with object and face recognition due to delayed development of these processes. Despite challenges, May has made progress in interpreting motion and shading cues, adapting to his new visual world.
The American Academy of Ophthalmology has awarded Special Recognition Awards to Mr. McManus for his dedication to vision research, and Dr. Jones and Dr. Brown for their innovative research and humanitarian efforts. The awards recognize their contributions to the field of ophthalmology.
A study found that 90% of trachoma infections occur in children under 10 years old in Tanzania and The Gambia. The SAFE strategy, which includes surgery, antibiotics, facial cleanliness, and environmental improvements, is key to eliminating trachoma by 2020.
Scientists have discovered a layer of cells in the inner retina containing melanopsin, which enables certain animals to synchronize their biological rhythms with day/night cycles. Melanopsin-free mice were unable to react normally to light stimuli and synchronize their rhythms.
A study by Hebrew University researcher Dr. Ehud Zohary found that blind people's brains reorganize to process touch and memory, leading to superior verbal memory skills. The research opens a window into understanding cortical plasticity in brain systems, potentially leading to improved treatment for neurodegenerative diseases.
The VISION 2020 initiative has the potential to reduce avoidable blindness by nearly two-thirds, saving $102 billion and 429 million blind person-years worldwide. Researchers estimate that economic productivity loss due to blindness could grow from $42 billion to $110 billion if prevention efforts fail.
Trachoma is a substantial global burden, with millions blinded worldwide and estimated annual costs of $2.9 billion. Future research should consider the broader impact of trachoma on disability beyond visual loss, according to the study's authors.
Researchers found that high-risk trachoma patients are unwilling to pay for future antibiotics, even if they can use household items as payment. This could limit the government's ability to control the disease and its progression.
A new study confirms that Braille is crucial for visual cortex development in blind individuals, regardless of age of blindness. The research used fMRI to compare early and late blind subjects, finding similar activation patterns in the visual cortex.
A study by University of Washington psychologists reveals infants' ability to gaze follow is crucial for learning language and understanding emotions, with open eyes leading to longer attention and more vocalization. By 14 months, infants become sensitive to potential obstacles and can initiate pointing and babbling towards objects.
A recent study found that eye drops can delay the onset of glaucoma by reducing intraocular pressure by approximately 20%. The Ocular Hypertension Treatment Study (OHTS) followed 1,636 participants with elevated eye pressure and showed a significant reduction in glaucoma development among those who received treatment. This breakthrough...
A pioneering neurosurgeon has successfully implanted an artificial vision system in eight blind patients, enabling them to drive cars and navigate their surroundings. The device, developed by the Dobelle Institute, stimulates the brain's visual cortex to create a semblance of sight.
A new drug could provide a non-destructive way to treat blindness in diabetics, blocking the pathway that causes damage. The drug is currently being tested in clinical trials and has been funded by $4.7 million from the US-based JDRF and NHMRC.
Raman Imaging of Human Macular Pigments demonstrates a rapid screening technique for macular degeneration using Raman spectroscopy. The method provides insight into individual variations in spatial profiles and total amounts of macular carotenoid pigments.
Researchers have discovered genetic mutations in dogs that mirror the genetic mutations of humans with inherited blindness, providing new insights into photoreceptor cell degeneration. The study has potential implications for treating both canine and human retinal diseases, including progressive retinitis pigmentosa.
Researchers have discovered a genetic mutation in English mastiffs that causes retinal dysfunction and degeneration, mirroring human dominant retinitis pigmentosa. The study aims to find treatments and cures for inherited forms of blindness in humans by testing therapies first in dogs.
Researchers at Virginia Tech are developing injectable magnetic fluids to repair torn or detached retinas, a technique that could help prevent blindness in thousands. The treatment appears promising in laboratory studies, with the potential to be more precise and effective than current methods.
A recent study found that glaucoma was the most common cause of blindness among Hispanics, accounting for 0.3% of the population, with open-angle glaucoma being the leading cause. The prevalence of visual impairment increased with age, with cataract and age-related macular degeneration also being significant causes.
A study found that blind individuals using Braille reading strategies activate areas of the brain normally reserved for vision, suggesting a novel way of utilizing occipital cortex. This activation is similar to what is observed in sighted individuals when reading print or receiving tactile stimulation.
Researchers found that high-dose, short-term chlorambucil treatment resulted in sustained inflammation reduction for 77% of patients with severe, non-infectious uveitis. The study's findings suggest that chlorambucil may become a preferred treatment option for these patients.
Researchers found that brains of blind-from-birth individuals exhibited unique activation patterns when reading Braille, suggesting a distinct mental imagery related to language. The study suggests that early visual experience may hinder brain plasticity in certain areas.
Researchers have successfully used gene therapy to reduce new blood vessel growth by up to 90% in mice with conditions similar to macular degeneration and diabetic retinopathy. Two genes, endostatin and pigment epithelium-derived factor (PEDF), were injected into the animals' eyes or tails to demonstrate the potential of gene therapy a...
A new telehealth technology called I-SITE is being used to fight a growing epidemic of diabetic blindness in First Nation Canadian communities. The system has successfully diagnosed and treated diabetic retinopathy, saving eyesight in patients who would otherwise have gone blind.
Researchers have identified the molecule transported by Rim protein in photoreceptor cells, a key factor in the development of Stargardt's disease and age-related macular degeneration. By understanding this process, scientists may be able to develop new treatments to slow or prevent the progression of these diseases.
Researchers developed the Ocutech autofocus telescope, which enables people with macular degeneration to see clearly for the first time. The device has been praised for its comfort and convenience, allowing users to see blackboards, read signs, and watch birds without manual focus.
Researchers at the University of Rochester discovered that Alzheimer's patients suffer from motion blindness, a condition where they struggle to interpret visual cues, leading to disorientation. This can be a significant factor in their daily lives, including driving and navigating familiar environments. The study's findings may lead t...
A study by Harvard Medical School reveals that growth hormone blocks the formation of new retinal blood vessels, which can cause blindness. The findings suggest new treatments may prevent blindness related to this condition.
The Ocutech VES AutoFocus Telescope is the world's first self-focusing telescopic glasses for the visually impaired, developed by Dr. Henry Greene and his team. The device can help several million people in the US alone, providing improved vision and recognition of faces and objects.