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Retina-on-a-chip provides powerful tool for studying eye disease

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.

SourceeLife·DateAug 27, 2019

Eye's vulnerability to macular degeneration revealed

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.

SourceeLife·DateMay 7, 2019

Detecting eye and brain disease earlier

Scientists at the University of Illinois Chicago are developing functional optical coherence tomography and OCT angiography to study minute changes in the retina indicating early stages of brain diseases. The technique, led by Xincheng Yao, aims to detect neurovascular coupling changes that precede clinical symptoms.

The eyes have it

High levels of prions were found throughout the eyes of deceased sCJD patients, suggesting the eye as a potential source for early detection and prevention of disease transmission. Researchers also discovered that prion seeds accumulate in the retina, with implications for diagnostic tests before symptoms become apparent.

Alzheimer's one day may be predicted during eye exam

Scientists have detected signs of Alzheimer's disease in the eyes of patients who showed no symptoms, using a non-invasive technique called optical coherence tomography angiography. The study found that patients with elevated levels of Alzheimer's proteins had significant thinning in the center of their retinas.

SourceWashU Medicine·JournalJAMA Ophthalmology·DateAug 23, 2018

Handheld probe images photoreceptors in children

Duke University researchers have developed a handheld probe that can image individual photoreceptors in the eyes of infants, allowing for early detection of eye diseases and brain-related traumas. The new technology uses adaptive optics and is much smaller and faster than previous systems, making it ideal for imaging young children.

SourceDuke University·JournalOptica·DateAug 23, 2018

Mount Sinai researchers discover how to restore vision using retinal stem cells

Researchers at Mount Sinai have successfully restored vision in mice by activating retinal stem cells, which could lead to treatments for patients with blinding diseases. The study found that new rod photoreceptor cells were generated and integrated into the existing retinal structure, restoring function of the visual pathway.

Blindness gene discovered

UNIGE researchers identified a new gene, MARK3, as the cause of a recessive genetic disorder leading to childhood blindness. The discovery enables accurate diagnosis and may lead to personalized treatment options.

SourceUniversité de Genève·JournalHuman Molecular Genetics·DateJul 23, 2018

Researchers are one step closer to developing eye drops to treat common sight loss condition

Researchers have made significant progress in developing eye drops to treat age-related macular degeneration (AMD), a leading cause of blindness. The eye drops use cell-penetrating peptides to deliver therapeutic drugs to the retina, offering a convenient and potentially cost-effective alternative to injections.

SourceUniversity of Birmingham·JournalInvestigative Ophthalmology & Visual Science·DateJul 19, 2018