Blue light from electronic devices may be an important factor for vitreous floaters

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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Attendance of Patients with ophthalmological problems about Eye Protection from UV/blue Light Radiation from Sun light and Electronic Devices in Sulaimani City

Kurdistan Journal of Applied Research ◽

10.24017/science.2018.2.19 ◽

2018 ◽

pp. 117-122

Author(s):

Salah Qadir Mahmood ◽

Muhammad Babakir-Mina ◽

Salar Ibrahim Ali ◽

Abdulrahman M. Ibrahem ◽

Bakhtyar Kamal Talabany

Keyword(s):

Blue Light ◽

Electronic Devices ◽

Light Sensitivity ◽

Cross Sectional ◽

Protection Measures ◽

Significant Difference ◽

Effects Of Radiation ◽

Human Eyes ◽

Harmful Effects ◽

Sun Light

Ultraviolet (UV) and blue light are affecting eyes during the daily time and may cause many eye’s problems and diseases. Therefore, this study aimed to explore the awareness of patients with ophthalmological problems on UV/blue light protection measures and to evaluate their knowledge and protection measures about radiation that emits from sun light and other electronic devices. It comprised a cross-sectional survey on a representative target population with eye diseases who visited the Shahid Aso Eye Hospital at Sulaimani city (sample size = 500). A special designed cross-sectional questionnaire was performed on a random sampling for data collection from 9th September 2017 to 1st January 2018. The statistical analysis was performed using SPSS version 22.0. There was an even distribution between male and female participants across the groups. The highest percentage of patients with light sensitivity was (79.6%) and the lowest percentage with eye injury was (7.8%). Most of participants had knowledge about the effects of UV/blue light on eye diseases by (52%), cataract (57.8%), glaucoma and red eye with percentage of (45.8%) and (43.4%) respectively. There was a significant difference for the males who were more game-player and using electronic devices like smartphone/tablet /iPad than females. There was a significant difference between male and female participants about the knowledge on harmful effects of radiation from electronic devices. Furthermore, only the patients with sun light sensitivity and cataract had a significant knowledge about harmful effects of radiation from electronic devices on human eyes. Finally, most of the patients with dry eyes, eye/lid infection and glaucoma and cataract had significantly more practices for taking visual breaks when using electronic devices. This study concluded that the patients with ophthalmological problems show a low level of knowledge and protection measurements on the harmful effects of UV/blue light on human eyes and radiation protection. Additionally, this study has discovered that sun protection measures are commonly inadequate among the participants and on a regular basis only a small portion of participants were used the sun protection requirements.

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Effect of Blue Light Filters on Tear and Contrast Sensitivity in Individuals Using Electronic Devices

Eye & Contact Lens Science & Clinical Practice ◽

10.1097/icl.0000000000000843 ◽

2021 ◽

Vol Publish Ahead of Print ◽

Author(s):

María Carmen Sánchez-González ◽

María Madroñero ◽

Marta C. García-Romera ◽

María-del-Carmen Silva-Viguera ◽

Juan-Josè Conejero-Domínguez ◽

...

Keyword(s):

Contrast Sensitivity ◽

Blue Light ◽

Electronic Devices ◽

Light Filters

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Short-term exposure to blue light emitted by electronic devices does not worsen melasma

Journal of the American Academy of Dermatology ◽

10.1016/j.jaad.2019.12.047 ◽

2020 ◽

Vol 83 (3) ◽

pp. 913-914 ◽

Cited By ~ 2

Author(s):

Luc Duteil ◽

Catherine Queille-Roussel ◽

Jean-Philippe Lacour ◽

Henri Montaudié ◽

Thierry Passeron

Keyword(s):

Blue Light ◽

Electronic Devices ◽

Short Term ◽

Short Term Exposure

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Marine Microalgae for Potential Lutein Production

Applied Sciences ◽

10.3390/app10186457 ◽

2020 ◽

Vol 10 (18) ◽

pp. 6457

Author(s):

Sushanta Kumar Saha ◽

Hande Ermis ◽

Patrick Murray

Keyword(s):

Blue Light ◽

Electronic Devices ◽

Arable Land ◽

Modern Society ◽

Normal Diet ◽

Environmentally Sustainable ◽

Commercial Market ◽

Increasing Demand ◽

Β Carotene ◽

Lutein Production

Lutein is particularly known to help maintain normal visual function by absorbing and attenuating the blue light that strikes the retina in our eyes. The effect of overexposure to blue light on our eyes due to the excessive use of electronic devices is becoming an issue of modern society due to insufficient dietary lutein consumption through our normal diet. There has, therefore, been an increasing demand for lutein-containing dietary supplements and also in the food industry for lutein supplementation in bakery products, infant formulas, dairy products, carbonated drinks, energy drinks, and juice concentrates. Although synthetic carotenoid dominates the market, there is a need for environmentally sustainable carotenoids including lutein production pathways to match increasing consumer demand for natural alternatives. Currently, marigold flowers are the predominant natural source of lutein. Microalgae can be a competitive sustainable alternative, which have higher growth rates and do not require arable land and/or a growth season. Currently, there is no commercial production of lutein from microalgae, even though astaxanthin and β-carotene are commercially produced from specific microalgal strains. This review discusses the potential microalgae strains for commercial lutein production, appropriate cultivation strategies, and the challenges associated with realising a commercial market share.

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Blue-Light Levels Emitted from Portable Electronic Devices Compared to Sunlight

Energies ◽

10.3390/en13164276 ◽

2020 ◽

Vol 13 (16) ◽

pp. 4276

Author(s):

David Baeza Moyano ◽

Yolanda Sola ◽

Roberto Alonso González-Lezcano

Keyword(s):

Blue Light ◽

Electronic Device ◽

Electronic Devices ◽

Spectral Irradiance ◽

Radiative Transfer Model ◽

Transfer Model ◽

Spectral Emission ◽

Visual Effects ◽

Light Emitting ◽

Light Levels

Over recent years, a technological revolution has taken place in which conventional lighting has been replaced by light emitting diodes (LEDs). Some studies have shown the possibility that blue light from these artificial sources could have deleterious effects on the retina. Considering that people spend a non-negligible time in front of screens from computers and mobile phones, the eyes receive blue light of different intensities depending on the source. Nevertheless, any study about the visual and non-visual effects of blue light must consider precise measurements taken from actual artificial sources. For this reason, we have analyzed the spectral emission of 10 different electronic devices and weighted them according to the hazard caused by blue light to the eyes, comparing the results with solar radiation simulated with a radiative transfer model. The maximum spectral irradiance of the measured electronic devices at 10 cm from the detector was located between 440 nm and 460 nm. The irradiance for blue light hazard ranged from 0.008 to 0.230 Wm−2 depending on the particular characteristics of each electronic device. In contrast, the solar radiances in the same spectral range are larger both under clear and cloudy conditions.

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Attendance of Patients with ophthalmological problems about Eye Protection from UV/blue Light Radiation from Sun light and Electronic Devices in Sulaimani City

Kurdistan Journal of Applied Research ◽

10.24017/10.24017/science.2018.2.19 ◽

2018 ◽

Vol 3 (specialIssue) ◽

pp. 117-122

Keyword(s):

Blue Light ◽

Electronic Devices ◽

Light Radiation ◽

Eye Protection ◽

Sun Light

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Faculty Opinions recommendation of Short-term exposure to blue light emitted by electronic devices does not worsen melasma.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.737145609.793576000 ◽

2020 ◽

Author(s):

Eugene Tan

Keyword(s):

Blue Light ◽

Electronic Devices ◽

Short Term ◽

Short Term Exposure

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265 Blue Light Filtering Laptop and Tablet Screen Protectors Used After Sunset Improve Sleep

SLEEP ◽

10.1093/sleep/zsab072.264 ◽

2021 ◽

Vol 44 (Supplement_2) ◽

pp. A106-A106

Author(s):

Holly Rus ◽

Sharon Danoff-Burg ◽

Morgan Weaver ◽

Rodolfo Rodriguez ◽

Roy Raymann

Keyword(s):

Blue Light ◽

Rem Sleep ◽

Negative Impact ◽

Light Exposure ◽

Statistical Significance ◽

Electronic Devices ◽

Self Report ◽

Younger Adults ◽

Time In Bed ◽

Falling Asleep

Abstract Introduction Light exposure at night is associated with altered sleep behavior and impaired sleep satisfaction, in part due to suppressing the release of melatonin. According to a National Sleep Foundation poll, 90% of people report using electronic devices within an hour of bed at least a few times per week. This study aimed to examine how use of EyeJust, a blue light filtering screen protector applied to laptops and tablet devices, impacted sleep. Methods A within subjects, pre-post intervention design was implemented. Adults (n=24) who self-reported regular blue light exposure after sunset and eye strain participated in a 6-week study (3 weeks of baseline followed by 3 weeks of product use). Intervention consisted of the use of blue light filtering screen protectors on iOS devices used after sunset. Sleep was measured objectively each night using SleepScore Max and by self-report. Participants also reported level of eye strain each night. Multilevel regression and paired t-tests were used to test for statistical significance. Results Across participants (75% female; age 21-50, avg. 37), there were 850 nights of sleep measured. When measured pre-post, many aspects of perceived sleep improved when using the screen protectors: sleepiness at bedtime, falling asleep in the preferred amount of time, ability to sleep through the night, feeling rested in the morning, sleep quality, and satisfaction with sleep (ps<.05). When measured daily, improvement was seen in eye strain, perceived time to fall asleep, perceived awakenings, and time spent awake at night (ps<.05). Objective sleep improvement was found in a subgroup of younger adults (age 21-35). They spent more time in bed (p=.03) and slept longer (6 hours, 40 minutes on average during baseline vs. 6 hours, 50 minutes during intervention; p=.04). This subgroup also had more REM sleep as reflected by a 2% increase in MindScore (measure of REM sleep; p=.04) Conclusion Using blue light filtering screen protectors helped improve sleep, measured by self-report and objectively, especially among younger adults. This intervention may help reduce the negative impact electronic devices have on sleep. Support (if any) EyeJust

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Atom-probe analysis of the solid-liquid interface

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139755 ◽

1995 ◽

Vol 53 ◽

pp. 676-677

Author(s):

J.A. Panitz

Keyword(s):

Molecular Level ◽

Selective Adsorption ◽

Electronic Devices ◽

Atom Probe ◽

Chemical Agent ◽

Hostile Environment ◽

Solid Interface ◽

Solid Liquid Interface ◽

Solid Liquid ◽

Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

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