BACKGROUND: Visual perception has hindered the development of blinded, placebo-controlled ultraviolet light exposure conditions in humans. New acrylic thermoplastics that block or transmit ultraviolet light have visual properties that may provide a solution. METHODS: In a series of triangle taste tests, 60 subjects were tested for the ability to visually perceive ultraviolet light transmission by two of four types of acrylic thermoplastics. RESULTS: Forty-six of sixty (67%) subjects were unable to visually detect ultraviolet light transmitting acrylics among ultraviolet blocking acrylics in both an ambient light background condition and an ambient light background condition with ultraviolet A light supplementation. CONCLUSION: Acrylic thermoplastics allow for the production of blinded, placebo-controlled ultraviolet light exposure conditions by eliminating visual discrimination differences between active and control groups.
BACKGROUND:Visual perception has hindered the development of blinded, placebo-controlled ultraviolet light exposure conditions in humans. New acrylic thermoplastics that block or transmit ultraviolet light have visual properties that may provide a solution. METHODS: In a series of triangle taste tests, 60 subjects were tested for the ability to visually perceive ultraviolet light transmission by two of four types of acrylic thermoplastics. RESULTS: Forty-six of sixty (67%) subjects were unable to visually detect ultraviolet light transmitting acrylics among ultraviolet blocking acrylics in both an ambient light background condition and an ambient light background condition with ultraviolet A light supplementation. CONCLUSION: Acrylic thermoplastics allow for the production of blinded, placebo-controlled ultraviolet light exposure conditions by eliminating visual discrimination differences between active and control groups.
Authors: Pamela M Aubert; John P Seibyl; Julianne L Price; Thomas S Harris; Francesca M Filbey; Heidi Jacobe; Michael D Devous; Bryon Adinoff Journal: Psychiatry Res Neuroimaging Date: 2016-04-07 Impact factor: 2.376
Authors: Sarah L Taylor; Mandeep Kaur; Kristen LoSicco; Joy Willard; Fabian Camacho; Kenneth S O'Rourke; Steven R Feldman Journal: J Altern Complement Med Date: 2009-01 Impact factor: 2.579