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It is indeed a pleasure to review this unique compilation of information concerning the biological effects of long wavelength ultraviolet (UV) energy, primarily UV-A. As noted in the preface, the book grew from an initial request by government and industry for data from a procedure for photopolymerization to a much broader evaluation of the field. The text develops through 11 chapters from basic spectral considerations to therapeutic uses and protective measures. The first three chapters are concerned with the spectrum, sources, and measurement of this radiation. Chapter 4 describes the optical properties of the skin and eyes and the two organ systems primarily at risk. Chapter 5 presents the basic effects of UV radiation on microorganisms and animal cells and chapter 6 details the acute biological effects on mammalian skin. Chapters 7 and 8 describe the adverse effects on skin, including the reactivity of certain diseases such as solar urticaria,
Epstein JH. UV-A: Biological Effects of Ultraviolet Radiation With Emphasis on Human Responses to Longwave Ultraviolet. Arch Dermatol. 1979;115(5):648. doi:10.1001/archderm.1979.04010050068053