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photoprotection by window glass, automobile glass, and…:光通过窗户玻璃、汽车玻璃、和….pdf


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Glass-7-17-05 1 PHOTOPROTECTION BY WINDOW GL ASS, AUTOMOBILE GLASS AND SUNGLASSES Chanisada Tuchinda, MD 1 ; Sabong Srivannaboon, MD 2 and Henry W Lim, MD 1 1Department of Dermatology, Henry Fo rd Hospital, Detroit, Michigan, 2Department of Ophthalmology, Faculty of Medicine Siriraj Hospital, Bangkok, Thailand. To whom correspondence should be addressed: Henry W. Lim, MD Department of Dermatology Henry Ford Medical Center - New Center One 3031 West Grand Blvd, Suite 800 Detroit, MI 48202 Phone: (313) 916-4060 Fax: 313-916-1477 Email: hlim1@ Glass-7-17-05 2 Abstract In daily activity, much time is spent indoors a nd in vehicles. Although the adverse effect of UV radiation is now well recognized and a significant public educat ion program has been undertaken regarding photoprotectio n, the role of window glass in photoprote ction has been rare ly addressed. It has been known for some time that window glass filters out UVB, but UVA and visible light are transmitted. Factors affecting UV protective properties of glass are glass type, glass color, interleave between glass, and glass coating. Recent developments in the glass industry have resulted in window glass that provides broad UV protec tion without the historically a ssociated loss of visible light transmission. In this article, photoprotection by window glass, au tomobile glass and sunglasses is reviewed. Glass-7-17-05 3 Introduction ic radiation is broadly divided into infrared radiation, visible light, and ultraviolet radiation (UVR) (Fig. 1). Heat is part of infrared radi ation, which is not visible to the human eye. Visible light is the wa velength range of general illumina tion. UVR is divided into three distinct bands in order of decreasing wavele ngth and increasing ener gy: UVA (320-400 nm), UVB (290-320 nm) and UVC (200-290 nm). Different wavelengths and energy associated with UV subdivision corresponds to distinctly different effects on

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