Tag Archives: retina

disease, Health

Optogenetic therapy

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Tunnel vision is a consequence of several cases where this occurs. In this patient, most patients’ sight is lost. The researchers’ optogenetic therapy was geared toward specific cells in particular. This team developed a viral vector that delivers a gene into ganglion cells responsive to red light, also known as amber light. The patient will have to wear a pair of goggles when undergoing the vision that takes incoming light and transforms it into monochromatic images, which are then projected live onto the re-engineered cells in the retina. When the patient is not wearing the goggles, he is completely blind. After gene therapy, patients had to turn their heads to locate items because they were dispersed in the retina. Scientists have spent decades trying to stimulate or suppress nerve cells with electrical impulses.

Reference
Scientists partially restore blind man’s vision with breakthrough gene therapy. https://www.cnet.com/news/scientists-partially-restore-vision-in-blind-man-using-breakthrough-gene-therapy/

Behavioral Science, Health

Beware “LED lights” damage eyes and disturb sleep

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The blue light in LED illumination that is increasingly utilized in our houses can harm the eye’s retina while disturbing our biological and sleep rhythms, a French health authority warned in an innovative new report.

Photo by rehan verma on Pexels.com

New scientific evidence confirms the “phototoxic effects” of short-term exposures to high-intensity blue light, along with an elevated risk of age-related macular degeneration after prolonged contact with lower-intensity sources. Age-related macular degeneration, a prominent cause of vision loss among individuals over 50, causes harm to the macula, a small spot close to the center of the retina that’s required for razor-sharp central vision.

Yet security from the harmful effects into the retina provided by “anti-blue light” screens, filters and sunglasses varies, and their ability to preserve rest rhythms just isn’t proven.

LEDs or light-emitting diodes comprise of a semiconductor chip added to a reflective surface; whenever electricity runs through the semiconductor, light is produced.

Blue light itself is certainly not new. Sunlight creates rays of blue that have higher power than many other wavelengths within the light spectrum. And antique lightbulbs produced some blue light, though not as much as what is emitted by energy-efficient curlicue (fluorescent) bulbs or LEDs.

LEDs are undergoing rapid technical and economic development as a brand new source of illumination. For quite some time, these were only utilized in electronics, but they are now found as critical parts of lighting systems. Today, LEDs are used for domestic purposes in addition to commercial and commercial people.

When you look at the United States, LED products have already been seeing increased use, a positive development with regards to of energy consumption because they use much less electricity per lumen than many traditional illumination technologies, based on the US Department of Energy. Market penetration of LED lighting is increasing and certainly will express 48% of total lumen-hour product sales by 2020 and 84% by 2030, the agency estimates.

You can find many types of blue light in its report. For example, “warm white” domestic LED lighting has reduced phototoxicity dangers, much like conventional lighting, relating to ANSES. However, other LED lighting sources, such as the newest flashlights, car headlights plus some toys, produce a whiter and “colder” blue light that is more harmful.