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Dual-Functional Carbon Dot Films: Blue-Light Filtration and Cyan-Light Conversion for Healthier White Light-Emitting Diodes.
Nano Lett
January 2025
Department of Physics, Umeå University, Linnaeus väg 24, Umeå SE-90187, Sweden.
Blue light emitted by commercial white light-emitting diodes (WLEDs) in the 440-470 nm range poses ocular health risks with prolonged exposure. Effective filtration is crucial for health-conscious lighting, but traditional filters often cause color distortion by completely removing blue emission. In this study, we address this challenge by synthesizing carbon dots (CDs) with strong absorption at 460 nm and bright cyan emission at 485 nm, featuring a photoluminescence quantum yield of 65% and a narrow full width at half-maximum of 30 nm.
View Article and Find Full Text PDFExploring retinal conditions through blue light reflectance imaging.
Prog Retin Eye Res
January 2025
Orbit Ophthalmo Learning, Rua Rio de São Pedro, no 256 Graça, CEP 40.150-350, Salvador, (BA), Brazil.
Blue light reflectance (BLR) imaging offers a non-invasive, cost-effective method for evaluating retinal structures by analyzing the reflectance and absorption characteristics of the inner retinal layers. By leveraging blue light's interaction with retinal tissues, BLR enhances visualization beyond the retinal nerve fiber layer, improving detection of structures such as the outer plexiform layer and macular pigment. Its diagnostic utility has been demonstrated in distinct retinal conditions, including hyperreflectance in early macular telangiectasia, hyporeflectance in non-perfused areas indicative of ischemia, identification of pseudodrusen patterns (notably the ribbon type), and detection of peripheral retinal tears and degenerative retinoschisis in eyes with reduced retinal pigment epithelial pigmentation.
View Article and Find Full Text PDFBlue light-induced phototoxicity in retinal cells: implications in age-related macular degeneration.
Front Aging Neurosci
December 2024
Department of Ophthalmology and Visual Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
Sunlight exposure is recognized as a risk factor for the development of age-related macular degeneration (AMD), a common neurodegenerative retinal disease in the elderly. Specifically, the blue light wavelengths within sunlight can negatively impact the physiology of light-sensitive retinal cells, including retinal pigmented epithelium (RPE) and photoreceptors. This review explores blue light-induced retinal degeneration, emphasizing the structural and functional impairments in RPE.
View Article and Find Full Text PDFUnderstanding the current provisions of support for people with an intellectual disabilities and/or autism in crisis: A mixed methods study.
Int J Soc Psychiatry
December 2024
Cornwall Intellectual Disability Equitable Research, Cornwall Partnership NHS Foundation Trust, Truro, UK.
Background: There has been significant reduction in inpatient beds for people with intellectual disability and/or autism (PwID/A) in the UK in the last decade following high profile national scandals in specialist psychiatric hospitals. To reduce inappropriate admissions a new strategy (Blue-Light, an emergency multi-disciplinary meeting to prevent admission to hospital) was introduced. However, there is no research on the influence of Blue-Light on crisis management for PwID/A.
View Article and Find Full Text PDFDifferential regulation of sleep by blue, green, and red light in .
Front Behav Neurosci
October 2024
Neuroscience Program, Skidmore College, Saratoga Springs, NY, United States.
Introduction: Exposure to blue-enriched light from electronic devices is an emergent disruptor of human sleep, especially at particular times of day. Further dissection of this phenomenon necessitates modeling in a tractable model organism.
Methods: Thus, we investigated the effects of light color on sleep in .
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