Blue light filtering ophthalmic lenses: A systematic review

Vagge, Aldo; Desideri, Lorenzo Ferro; Noce, Chiara Del; Mola, Ilaria Di; Sindaco, Daniele; Traverso, Carlo Enrico

doi:10.1080/08820538.2021.1900283

Cited by 29 publications

(34 citation statements)

References 54 publications

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“…A larger study is necessary to overcome this limitation. Finally, although we account for variations in lens status among the participants in our study, we lack detail on the severity of cataracts or the potential for certain types of intraocular lenses to have blue-light blocking properties [40]. These factors are potentially important with regard to the development of SAD.…”

Section: Discussionmentioning

confidence: 99%

Vision-Related Quality of Life and Seasonal Affective Disorder in Patients with Glaucoma and Macular Degeneration

Szulborski

Prosniewski

Anjum

et al. 2022

Vision

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Seasonal affective disorder (SAD) is characterized by depressive episodes related to changes in the seasons. Patients with severe vision loss are at an increased risk of SAD. This study seeks to determine the extent to which patients with moderate vision loss report symptoms of SAD. In this cross-sectional, comparative case series, the Seasonal Pattern Assessment Questionnaire (SPAQ) and the National Eye Institute Visual Function Questionnaire (VFQ-39) were used to screen 111 patients with age-related macular degeneration (AMD) and/or primary open-angle glaucoma (POAG). A multiple regression analysis was performed to create a predictive model for SAD based on the Global Seasonality Score (GSS) using the VFQ-39. Subjects who reported symptoms of SAD (GSS > 8) had lower vision-related quality of life (composite score: 57.2 versus 73.2, p < 0.001). Exploratory factor analysis revealed that the items on the VFQ-39 split into two distinct dimensions that together accounted for 63.2% of the total variance in the GSS. One group of questions addressed vision-related problems; the other group comprised questions related to the quality of life. Whereas this model successfully identified patients with vision loss at risk of SAD, a model restricted to the questions available on the shorter, widely used VFQ-25 instrument did not reliably identify patients at risk of SAD.

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Section: Discussionmentioning

confidence: 99%

Vision-Related Quality of Life and Seasonal Affective Disorder in Patients with Glaucoma and Macular Degeneration

Szulborski

Prosniewski

Anjum

et al. 2022

Vision

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show abstract

“…It is noted that there is one activator ion per 𝑉 𝑥 𝑐 𝑁 volume, and the Rc is relatively double the radius of a sphere with this volume. Regarding to the luminescence intensity of the phosphor sample, the emission intensity on per activator concentration is calculated by (2).…”

Section: Green-blue Emitting (Basr)3bp3o12:eu 2+ Phosphor Preparationmentioning

confidence: 99%

The impacts of (Ba,Sr)3BP3O12:Eu2+ on the luminous flux of phosphor-converted-white light emitting diode packages

Bui

Thi

2022

IJEECS

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The use of (Ba,Sr)3BP3O12:Eu2+ in the remote phosphor structure has been proposed and analysed to offer significant improvement to the lighting performance of the phosphor-converted white light emitting diode (LED). The phosphor emits green and blue spectra centred at 520 nm and 465 nm, respectively. Thus, the phosphor can compensate the blue and green light energy components in the white-light spectral band, helping to enhance the luminous efficiency and colour uniformity of the dual-layer remote phosphor package. The increase in (Ba,Sr)3BP3O12:Eu2+ however is not advantageous to the colour rendering index because of the lower red emission. The backscattered and back-reflected lights are degraded when the (Ba,Sr)3BP3O12:Eu2+ phosphor layer appears in the structure. The stable chromaticity and luminous flux at good values are observed when 10% weight percentage of (Ba,Sr)3BP3O12:Eu2+ is applied.

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“…Besides, the phosphor's surface coating has been studied with an aim of solving the mentioned problems of Y2O2S:Eu 3+ red phosphors to enhance their performances, when being applied in LED productions. In particular, the oxide-coating was proposed to phosphor particles, for instances, silica, Y2O3, ZnO, MgO, and organic polymer-coatings, to be compatible with specifications of WLED devices [13]- [15]. The surface coating can strengthen the phosphor-glass substrate adhesion, enhance the stability of phosphor materials under the air condition, and avoid the radiation damaging the phosphors.…”

Section: Introductionmentioning

confidence: 99%

The effects of SiO2@Y2O2S:Eu3+ phosphor on the optic characteristics of white light-emitting diodes

Bui

2022

IJEECS

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The study investigated the effectiveness of coating silica nanoparticles (SiO2) and resin-silica nanocomposites poly methyl methacrylate (PMMA)-silicaover the surface of Y2O2S:Eu3+ red phosphors. The purpose of this surface coating is to enhance the optical properties, including the photoluminescence (PL) and long-term stability, of Y2O2S:Eu3+. Two methods used to coat the phosphor with 5-mm silica nanoparticles are dip-coating and sol-gel (Stöber) methods. SiO2 nanoparticles were formed via hydrolysis and condensation reactions, while radical polymerization was performed to fabricate the poly (1-vinyl-2-pyrrolidone). The Y2O2S:Eu3+ surface coating of PMMA-silica composite was performed via two reactions. One is the reaction of SiO2 nanoparticles with methyl methacrylate (MMA) monomer, and the other is MMA-tetraethyl orthosilicate (TEOS) reaction. The results showed that by using the latter method, Y2O2S:Eu3+ yielded better PL and long-term stability. Additionally, surface coating with the PMMA-SiO2 nanocomposite using the second technique resulted in 5% enhancement in PL and stabilized the cathode luminescence (CL) intensity of Y2O2S:Eu3+, compared to those properties of uncoated Y2O3S:Eu3+ phosphor particles.

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Blue light filtering ophthalmic lenses: A systematic review

Cited by 29 publications

References 54 publications

Vision-Related Quality of Life and Seasonal Affective Disorder in Patients with Glaucoma and Macular Degeneration

Vision-Related Quality of Life and Seasonal Affective Disorder in Patients with Glaucoma and Macular Degeneration

The impacts of (Ba,Sr)3BP3O12:Eu2+ on the luminous flux of phosphor-converted-white light emitting diode packages

The effects of SiO2@Y2O2S:Eu3+ phosphor on the optic characteristics of white light-emitting diodes

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