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Comparison of ophthalmic toxicity of light-emitting diode and organic light-emitting diode light sources

 Ikhyun Jun  ;  Soo Jung Han  ;  Hae-Sol Shin  ;  Jiyeon Kim  ;  Eung Kweon Kim  ;  Tae-Im Kim  ;  Sang Chul Yoon  ;  Kyoung Yul Seo 
 SCIENTIFIC REPORTS, Vol.10(1) : 11582, 2020-07 
Journal Title
Issue Date
The use of organic light-emitting diodes (OLEDs) has rapidly increased in recent years. However, the effect of OLEDs on human health has not been studied yet. We investigated morphologic and functional changes after OLEDs exposure of human ocular cells, including corneal, conjunctival, lens, and retinal pigment epithelial cells, and mouse eyes. In corneal and conjunctival epithelial cells, the levels of reactive oxygen species production and interleukin-8 expression after white light-emitting diodes (LED) exposure were significantly greater than those after OLED exposure. Although no gross morphologic changes of the eyelid or cornea were found in LED- or OLED-exposed mice, oxidative stress on ocular surface was significantly increased, and the outer nuclear layer (ONL) was significantly shorter in both light-treated groups than the control group. Moreover, ONL thickness was significantly lower in the LED group than the OLED group. The electroretinography response was significantly lower in light exposure group, and there was significant difference between LED- and OLED-treated mice. Although OLED exhibits certain ocular toxicity, it can be less toxic to eyes than LED. The higher blue-wavelength energy of LED light might be the reason for its higher toxicity relative to OLED.
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1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae-Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Seo, Kyoung Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
Yoon, Sang Chul(윤상철) ORCID logo https://orcid.org/0000-0003-0454-9597
Jun, Ik Hyun(전익현) ORCID logo https://orcid.org/0000-0002-2160-1679
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