{"title":"LED曝光对防蓝光镜片对比度敏感度和防护效果的影响。","authors":"Dolvin Monterio, Elizebeth Olive Akansha Manoj Kumar, Mousumi Ghosh, Radhika Poojary, Judy Jose, Judith Shefali Jathanna, Manasa Bhandarkar, Nagarajan Theruveethi","doi":"10.18240/ijo.2025.10.18","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To measure the contrast sensitivity (CS) using computer-based Chart2020 software pre- and post-white light exposure with and without blue-blocking lenses (BBLs).</p><p><strong>Methods: </strong>The study included participants aged 18 to 25y (<i>n</i>=30 eyes), where baseline CS was measured before the experiment. Following this, the participants were exposed to two white light-emitting diodes (LEDs; 450 lx each), placed at a 45-degree angle from the participant's eye and 80 cm from the light source. All participants were randomly divided into three groups (BBL1- Placebo lens, BBL2- Crizal Prevencia, BBL3- Duravision) by sequential randomisation, which was double-blinded. Post-light exposure, the CS was measured monocularly with a calibrated computer-based CS Chart-2020 software at different log units.</p><p><strong>Results: </strong>CS measured using Chart-2020 software at 0.8, 1.5, 6, 12, and 18 cpd pre- and post-white LED exposure with and without BBLs showed a significant difference (<i>P</i><0.05) in contrast threshold and log contrast at 6 cpd and 18 cpd (<i>P</i><0.05) and showed no significant differences in 0.8, 1.5, 12 cpd (<i>P</i>>0.05).</p><p><strong>Conclusion: </strong>This study shows that exposure to white LEDs can diminish CS, while BBLs may ameliorate these negative effects.</p>","PeriodicalId":14312,"journal":{"name":"International journal of ophthalmology","volume":"18 10","pages":"1944-1948"},"PeriodicalIF":1.8000,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12454013/pdf/","citationCount":"0","resultStr":"{\"title\":\"Impact of LED exposure on contrast sensitivity and protective efficacy of blue-blocking lenses.\",\"authors\":\"Dolvin Monterio, Elizebeth Olive Akansha Manoj Kumar, Mousumi Ghosh, Radhika Poojary, Judy Jose, Judith Shefali Jathanna, Manasa Bhandarkar, Nagarajan Theruveethi\",\"doi\":\"10.18240/ijo.2025.10.18\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Aim: </strong>To measure the contrast sensitivity (CS) using computer-based Chart2020 software pre- and post-white light exposure with and without blue-blocking lenses (BBLs).</p><p><strong>Methods: </strong>The study included participants aged 18 to 25y (<i>n</i>=30 eyes), where baseline CS was measured before the experiment. Following this, the participants were exposed to two white light-emitting diodes (LEDs; 450 lx each), placed at a 45-degree angle from the participant's eye and 80 cm from the light source. All participants were randomly divided into three groups (BBL1- Placebo lens, BBL2- Crizal Prevencia, BBL3- Duravision) by sequential randomisation, which was double-blinded. Post-light exposure, the CS was measured monocularly with a calibrated computer-based CS Chart-2020 software at different log units.</p><p><strong>Results: </strong>CS measured using Chart-2020 software at 0.8, 1.5, 6, 12, and 18 cpd pre- and post-white LED exposure with and without BBLs showed a significant difference (<i>P</i><0.05) in contrast threshold and log contrast at 6 cpd and 18 cpd (<i>P</i><0.05) and showed no significant differences in 0.8, 1.5, 12 cpd (<i>P</i>>0.05).</p><p><strong>Conclusion: </strong>This study shows that exposure to white LEDs can diminish CS, while BBLs may ameliorate these negative effects.</p>\",\"PeriodicalId\":14312,\"journal\":{\"name\":\"International journal of ophthalmology\",\"volume\":\"18 10\",\"pages\":\"1944-1948\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2025-10-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12454013/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International journal of ophthalmology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.18240/ijo.2025.10.18\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"OPHTHALMOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of ophthalmology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.18240/ijo.2025.10.18","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"OPHTHALMOLOGY","Score":null,"Total":0}
Impact of LED exposure on contrast sensitivity and protective efficacy of blue-blocking lenses.
Aim: To measure the contrast sensitivity (CS) using computer-based Chart2020 software pre- and post-white light exposure with and without blue-blocking lenses (BBLs).
Methods: The study included participants aged 18 to 25y (n=30 eyes), where baseline CS was measured before the experiment. Following this, the participants were exposed to two white light-emitting diodes (LEDs; 450 lx each), placed at a 45-degree angle from the participant's eye and 80 cm from the light source. All participants were randomly divided into three groups (BBL1- Placebo lens, BBL2- Crizal Prevencia, BBL3- Duravision) by sequential randomisation, which was double-blinded. Post-light exposure, the CS was measured monocularly with a calibrated computer-based CS Chart-2020 software at different log units.
Results: CS measured using Chart-2020 software at 0.8, 1.5, 6, 12, and 18 cpd pre- and post-white LED exposure with and without BBLs showed a significant difference (P<0.05) in contrast threshold and log contrast at 6 cpd and 18 cpd (P<0.05) and showed no significant differences in 0.8, 1.5, 12 cpd (P>0.05).
Conclusion: This study shows that exposure to white LEDs can diminish CS, while BBLs may ameliorate these negative effects.
期刊介绍：
· International Journal of Ophthalmology-IJO (English edition) is a global ophthalmological scientific publication
and a peer-reviewed open access periodical (ISSN 2222-3959 print, ISSN 2227-4898 online).
This journal is sponsored by Chinese Medical Association Xi’an Branch and obtains guidance and support from
WHO and ICO (International Council of Ophthalmology). It has been indexed in SCIE, PubMed,
PubMed-Central, Chemical Abstracts, Scopus, EMBASE , and DOAJ. IJO JCR IF in 2017 is 1.166.
IJO was established in 2008, with editorial office in Xi’an, China. It is a monthly publication. General Scientific
Advisors include Prof. Hugh Taylor (President of ICO); Prof.Bruce Spivey (Immediate Past President of ICO);
Prof.Mark Tso (Ex-Vice President of ICO) and Prof.Daiming Fan (Academician and Vice President,
Chinese Academy of Engineering.
International Scientific Advisors include Prof. Serge Resnikoff (WHO Senior Speciatist for Prevention of
blindness), Prof. Chi-Chao Chan (National Eye Institute, USA) and Prof. Richard L Abbott (Ex-President of
AAO/PAAO) et al.
Honorary Editors-in-Chief: Prof. Li-Xin Xie(Academician of Chinese Academy of
Engineering/Honorary President of Chinese Ophthalmological Society); Prof. Dennis Lam (President of APAO) and
Prof. Xiao-Xin Li (Ex-President of Chinese Ophthalmological Society).
Chief Editor: Prof. Xiu-Wen Hu (President of IJO Press).
Editors-in-Chief: Prof. Yan-Nian Hui (Ex-Director, Eye Institute of Chinese PLA) and
Prof. George Chiou (Founding chief editor of Journal of Ocular Pharmacology & Therapeutics).
Associate Editors-in-Chief include:
Prof. Ning-Li Wang (President Elect of APAO);
Prof. Ke Yao (President of Chinese Ophthalmological Society) ;
Prof.William Smiddy (Bascom Palmer Eye instituteUSA) ;
Prof.Joel Schuman (President of Association of University Professors of Ophthalmology,USA);
Prof.Yizhi Liu (Vice President of Chinese Ophtlalmology Society);
Prof.Yu-Sheng Wang (Director of Eye Institute of Chinese PLA);
Prof.Ling-Yun Cheng (Director of Ocular Pharmacology, Shiley Eye Center, USA).
IJO accepts contributions in English from all over the world. It includes mainly original articles and review articles,
both basic and clinical papers.
Instruction is Welcome Contribution is Welcome Citation is Welcome
Cooperation organization
International Council of Ophthalmology(ICO), PubMed, PMC, American Academy of Ophthalmology, Asia-Pacific, Thomson Reuters, The Charlesworth Group, Crossref,Scopus,Publons, DOAJ etc.
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