Highly transparent plasticized PVC composite film with ideal ultraviolet/high-energy short-wavelength blue light shielding

Background: There is growing concern that the increased use of personal digital devices, which emit a high proportion of their light in the blue wavelengths, may have harmful effects on the retina. Extensive historical as well as current research demonstrates that exposure to high energy visible light (blue light) can damage the retina under certain circumstances. There are, however, no studies that directly address whether blue light at the intensities emitted by digital devices can potentially cause such harm. The present review aimed to examine whether blue light exposure from computers, tablets, and cell phones can, when used habitually over a prolonged period of time, be harmful to the retinal. Methods: A search of the literature on blue light-induced retinal damage was performed using a number of scientific search engines, including BioOne Complete™, Google Scholar™, Paperity™, PubMed™, and ScienceOpen™. Studies most significant for addressing the question of possible harmful effects of blue light emitted by personal digital devices were selected from this search and reviewed. Results: The data from the selected studies were summarized and their limitations in addressing the question of whether the blue light from personal digital devices is capable of producing retinal damage were addressed. Based on these limitations, a practical experimental protocol for collecting the additional data needed was proposed. Data from pilot experiments are presented that indicate the practicality of this approach. Conclusions: The currently available data on the effects of blue light on the retina are not sufficient to refute the hypothesis that the use of personal digital devices could, over a lifetime, produce retinal damage. Additional studies, such as those proposed in this article, are needed to resolve this issue.

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Interrelation between Qai’lullah, Blue Light Exposure and Neurocognitive Performances: A Short Review

Journal of Quranic Sciences and Research ◽

10.30880/jqsr.2021.02.02.001 ◽

2021 ◽

Vol 02 (02) ◽

Author(s):

Nur Farhana Fadzil ◽

◽

Siti Amira Othman ◽

Keyword(s):

Job Performance ◽

Blue Light ◽

Memory Consolidation ◽

Light Exposure ◽

Short Review ◽

High Energy ◽

Neurocognitive Performance ◽

Night Sleep ◽

Visual Contrast ◽

The World

Qai’lullah or napping is a phenomenon that is widely practiced in the world. Islam advocates mid-day napping as it is primarily practiced by the Prophet Muhammad (pbuh). Scientists and scholars also acknowledge the benefits beyond this practice after various research and studies done. Hence, this article emphasizes topic of sleep in Islamic insight, their stages of sleeps according to Quran and the practiced of Qai’lullah or mid-day napping. The high-energy blue light exposure from the natural source, Sun and also digital screens reported reduce visual contrast and affect the sharpness and clarity by creating glares lead to mental and physical fatigue. Thus, a short nap in the mid-afternoon helps to boost memory, lift our mood, and improve job performance. The effect associated with qai’lullah are also being reviewed including improved the neurocognitive performance, alertness, recover the loss night sleep and enhanced the quality and increased memory consolidation in people.

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Influence of blue light spectrum filter on short-wavelength and standard automated perimetries

Arquivos Brasileiros de Oftalmologia ◽

10.1590/s0004-27492006000500020 ◽

2006 ◽

Vol 69 (5) ◽

pp. 725-729 ◽

Cited By ~ 4

Author(s):

Leonardo Cunha Castro ◽

Carlos Eduardo Barbosa de Souza ◽

Eduardo Sone Soriano ◽

Luiz Alberto Soares Melo Jr. ◽

Augusto Paranhos Jr.

Keyword(s):

Blue Light ◽

Short Wavelength ◽

Light Spectrum

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Role of Short-wavelength Blue Light in the Formation of Cataract and Expression of Caspase-1, -11 and Gasdermin D in rat Lens Epithelium Cells: Insight into the Novel Pathogenesis of Cataract.

10.21203/rs.2.18560/v1 ◽

2019 ◽

Author(s):

Yamin Wang ◽

Min Zhang ◽

Ying Sun ◽

Xiaohui Wang ◽

Zhaowei Song ◽

...

Keyword(s):

Blue Light ◽

Short Wavelength ◽

Light Exposure ◽

The Novel ◽

Blue Led ◽

Caspase 1 ◽

Epithelium Cells ◽

Experimental Group ◽

Insight Into

Abstract Background Cataracts have been verified to be associated with a number of risk factors. The sun and artificial light sources, including light-emitting diode (LED) and fluorescent light tubes, are the primary sources of short-wavelength blue light. With the increasing popularity of blue-rich LED-backlit display devices, our eyes are now exposed to more short-wavelength blue light than they were in the past. The goal of this study was to evaluate the role of short-wavelength blue light in the formation of cataract. Additionally, the pathogenesis of cataracts after short-wavelength light exposure was investigated.Methods SD rats were randomly divided into 2 main groups: a control group (10 rats each for the 4-, 8-, and 12-week groups) and an experimental group (10 rats each for the 4-, 8-, and 12-week groups). The rats in the experimental group were exposed to a short-wavelength blue LED lamp for 12 hours per day. After exposure to the blue LED lamp, the rats were maintained in total darkness for 12 hours, after which a 12-hour light/dark cycle was resumed. The intensity of the lamp was 3000 lux. At the end of the short-wavelength blue LED lamp exposure (for 4, 8, and 12 weeks), the expression levels of caspase-1, caspase-11 and gasdermin D (GSDMD) in rat epithelium cells (LECs) were examined in rat epithelial cells (LECs) using qRT-PCR and Western blotting analyses. Results After 6 weeks, cataracts had developed in the experimental rats (4/20 eyes). The clarity of the lens then gradually worsened with the duration of exposure. Twelve weeks later, all of the rat eyes had developed cataracts. Then the expression levels of caspase-1, caspase-11 and GSDMD at 4, 8, and 12 weeks were significantly higher in samples from rats exposed to a short-wavelength blue LED lamp than samples from control rat (p˂0.05). Conclusion The data indicate that pyroptosis play a key role of in cataracts induced by short-wavelength blue light exposure, highlighting caspase-1, caspase-11 and GSDMD as possible therapeutic targets for cataract treatment. This study might provide new insight into the novel pathogenesis of cataracts.

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Prior Light Exposure Enhances the Pupil Response to Subsequent Short Wavelength (Blue) Light

Journal of Clinical & Experimental Ophthalmology ◽

10.4172/2155-9570.1000152 ◽

2011 ◽

Vol 02 (05) ◽

Cited By ~ 6

Author(s):

Michael Stormly Hansen ◽

Birgit Sander ◽

Aki Kawasaki ◽

Adam Elias Brøndsted ◽

Claus Nissen

Keyword(s):

Blue Light ◽

Short Wavelength ◽

Light Exposure ◽

Pupil Response

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Role of short-wavelength blue light in the formation of cataracts and the expression of caspase-1, caspase-11, Gasdermin D in rat lens epithelial cells: insights into a novel pathogenic mechanism of cataracts

BMC Ophthalmology ◽

10.1186/s12886-020-01565-z ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Yamin Wang ◽

Min Zhang ◽

Ying Sun ◽

Xiaohui Wang ◽

Zhaowei Song ◽

...

Keyword(s):

Epithelial Cells ◽

Blue Light ◽

Short Wavelength ◽

Pathogenic Mechanism ◽

Lens Epithelial Cells ◽

Caspase 1

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Extending Nighttime Combustion Source Detection Limits with Short Wavelength VIIRS Data

Remote Sensing ◽

10.3390/rs11040395 ◽

2019 ◽

Vol 11 (4) ◽

pp. 395 ◽

Cited By ~ 8

Author(s):

Christopher Elvidge ◽

Mikhail Zhizhin ◽

Kimberly Baugh ◽

Feng Hsu ◽

Tilottama Ghosh

Keyword(s):

Curve Fitting ◽

Short Wavelength ◽

Detection Limits ◽

Source Area ◽

High Energy ◽

Source Detection ◽

Combustion Source ◽

Low Light ◽

Spectral Bands ◽

Combustion Sources

The Visible Infrared Imaging Radiometer Suite (VIIRS) collects low light imaging data at night in five spectral bands. The best known of these is the day/night band (DNB) which uses light intensification for imaging of moonlit clouds in the visible and near-infrared (VNIR). The other four low light imaging bands are in the NIR and short-wave infrared (SWIR), designed for daytime imaging, which continue to collect data at night. VIIRS nightfire (VNF) tests each nighttime pixel for the presence of sub-pixel IR emitters across six spectral bands with two bands each in three spectral ranges: NIR, SWIR, and MWIR. In pixels with detection in two or more bands, Planck curve fitting leads to the calculation of temperature, source area, and radiant heat using physical laws. An analysis of January 2018 global VNF found that inclusion of the NIR and SWIR channels results in a doubling of the VNF pixels with temperature fits over the detection numbers involving the MWIR. The addition of the short wavelength channels extends detection limits to smaller source areas across a broad range of temperatures. The VIIRS DNB has even lower detection limits for combustion sources, reaching 0.001 m2 at 1800 K, a typical temperature for a natural gas flare. Comparison of VNF tallies and DNB fire detections in a 2015 study area in India found the DNB had 15 times more detections than VNF. The primary VNF error sources are false detections from high energy particle detections (HEPD) in space and radiance saturation on some of the most intense events. The HEPD false detections are largely eliminated in the VNF output by requiring multiband detections for the calculation of temperature and source size. Radiance saturation occurs in about 1% of the VNF detections and occurs primarily in the M12 spectral band. Inclusion of the radiances affected by saturation results in temperature and source area calculation errors. Saturation is addressed by identifying the presence of saturation and excluding those radiances from the Planck curve fitting. The extremely low detection limits for the DNB indicates that a DNB fire detection algorithm could reveal vast numbers of combustion sources that are undetectable in longer wavelength VIIRS data. The caveats with the DNB combustion source detection capability is that it should be restricted to pixels that are outside the zone of known VIIRS detected electric lighting.

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Protective Effect of the Aqueous Extract of Deschampsia antarctica (EDAFENCE®) on Skin Cells against Blue Light Emitted from Digital Devices

International Journal of Molecular Sciences ◽

10.3390/ijms21030988 ◽

2020 ◽

Vol 21 (3) ◽

pp. 988 ◽

Cited By ~ 1

Author(s):

Silvia Lorrio ◽

Azahara Rodríguez-Luna ◽

Pablo Delgado-Wicke ◽

Marta Mascaraque ◽

María Gallego ◽

...

Keyword(s):

Oxidative Stress ◽

Signaling Pathway ◽

Blue Light ◽

Aqueous Extract ◽

Electronic Devices ◽

High Energy ◽

Dermal Fibroblasts ◽

Light Irradiation ◽

Deschampsia Antarctica ◽

Pathway Activation

Skin is being increasingly exposed to artificial blue light due to the extensive use of electronic devices. This, together with recent observations reporting that blue light—also known as high-energy visible light—can exert cytotoxic effects associated with oxidative stress and promote hyperpigmentation, has sparked interest in blue light and its potential harmful effects on skin. The photoprotective properties of new extracts of different botanicals with antioxidant activity are therefore being studied. Deschampsia antarctica (Edafence®, EDA), a natural aqueous extract, has shown keratinocyte and fibroblast cell protection effects against ultraviolet radiation and dioxin toxicity. In this regard, we studied the protective capacity of EDA against the deleterious effects of artificial blue light irradiation in human dermal fibroblasts (HDF) and melanocytes. We analyzed the impact of EDA on viability, cell morphology, oxidative stress, melanogenic signaling pathway activation and hyperpigmentation in HDF and melanocytes subjected to artificial blue light irradiation. Our results show that EDA protects against cell damage caused by artificial blue light, decreasing oxidative stress, melanogenic signaling pathway activation and hyperpigmentation caused by blue light irradiation. All these findings suggest that EDA might help prevent skin damage produced by artificial blue light exposure from screen of electronic devices.

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