The Application of 3-Dimensional Measurement and Grayscale Value Measurement Techniques in Lower Eyelid Blepharoplasty

Abstract Background Lower eyelid blepharoplasty addresses under-eye bags and tear troughs, but traditional evaluations lack objectivity. Three-dimensional (3D) imaging and grayscale analysis offer a novel, quantitative approach. Objectives The aim of the authors is to objectively assess blepharoplasty outcomes using 3D imaging and grayscale analysis, validating their effectiveness in capturing morphological and skin texture changes. Methods A self-controlled study of 68 patients (January-June 2023) utilized 3D imaging (EinScan H2) and grayscale analysis to measure preoperative and postoperative changes. Key landmarks and grayscale values were analyzed using SPSS 22.0. Results Postoperative 3D measurements showed reduced sagittal distance (P < .05) and increased grayscale values (P < .05), indicating improved morphology and skin texture. intraclass correlation coefficient values exceeded 0.80, confirming reproducibility. Conclusions The 3D imaging and grayscale analysis provide objective, reliable evaluation of blepharoplasty outcomes, enhancing precision and paving the way for personalized treatment despite technical challenges. Level of Evidence: 4 (Therapeutic)