Sharon Eve Sonenblum, PhD, is Principal Research Scientist, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA. Rahee Patel, DPT, Sarah Phrasavath, DPT, and Sharon Xu, DPT, are Student Researchers, Emory University, Atlanta. Barbara M. Bates-Jensen, PhD, RN, FAAN, is Professor of Nursing and Medicine, University of California, Los Angeles.
Adv Skin Wound Care. 2023 Oct 1;36(10):524-533. doi: 10.1097/ASW.0000000000000043.
To examine the effectiveness of the ColorMeter DSM III (ColorMeter; Cortex Technology) at grouping individuals by skin tone and measuring erythema/skin discoloration after erythema induction across skin tones.
This pre/post experimental study induced erythema on a convenience sample of 61 healthy adults. Skin tone at baseline was measured using the ColorMeter, Munsell Soil Color Chart 5YR (Munsell), and Pantone SkinTone Guide (Pantone) and compared with the Eumelanin Human Skin Colour Scale (Eumelanin Scale) groupings. Erythema and melanin values on the arm immediately and after recovery time were compared with baseline values. Melanin was measured at five body regions on the face and arm.
Participants were predominantly women (64% [n = 39] women, 36% [n = 22] men) and young (mean, 28.8 ± 14.3 years); 5% (n = 3) were Hispanic, 26% (n = 16) Asian, 29% (n = 18) Black, 38% (n = 23) White, and 7% (n = 4) identified with more than one race. ColorMeter lightness (L*) and melanin measures were strongly correlated with both Munsell and Pantone values. Munsell skin tone groups were not aligned with Eumelanin Scale groupings. Most participants were in the Eumelanin intermediate-low group, and this changed depending on which body location melanin value was used. The change in erythema from baseline did not differ significantly across skin tone groups at the ulnar head, but on the forearm at the delayed time point, significant differences existed between light and both medium and dark skin tone groups (P = .001; 95% CI, 0.04-0.37).
The ColorMeter provides an effective objective measure of skin tone and erythema/discoloration across various skin tones and may improve on current standards for detection. The proposed Eumelanin Scale-Modified provides additional sensitivity for persons with medium skin tones.
研究 ColorMeter DSM III（ColorMeter；Cortex Technology）在根据肤色对个体进行分组以及测量肤色诱导红斑/变色方面的效果。
本预-后实验研究对 61 名健康成年人进行了红斑诱导。使用 ColorMeter、Munsell 土壤色卡 5YR（Munsell）和 Pantone 肤色指南（Pantone）基线测量肤色，并与真黑素人体肤色分级（Eumelanin Scale）进行比较。手臂上的红斑和黑色素值与基线值进行比较。在面部和手臂的五个身体部位测量黑色素。
参与者主要为女性（64%[n=39]女性，36%[n=22]男性）和年轻人（平均年龄 28.8±14.3 岁）；5%（n=3）为西班牙裔，26%（n=16）为亚裔，29%（n=18）为黑人，38%（n=23）为白人，7%（n=4）为多种族。ColorMeter 明度（L*）和黑色素测量值与 Munsell 和 Pantone 值密切相关。Munsell 肤色组与 Eumelanin Scale 分组不对应。大多数参与者属于 Eumelanin 中低组，这取决于使用的身体部位黑色素值。在鹰嘴突处，红斑从基线的变化在不同肤色组之间没有显著差异，但在前臂处，在延迟时间点，在浅色与中色和深色肤色组之间存在显著差异（P=.001；95%CI，0.04-0.37）。
ColorMeter 可有效客观地测量各种肤色的肤色和红斑/变色，并且可能改进当前的检测标准。拟议的 Eumelanin Scale-Modified 为中肤色人群提供了额外的敏感性。
