Biomedical optics is a branch of science that combines the principles of physics, engineering, and biology to develop techniques and technologies to study biological tissues and structures using light. This field focuses on the use of various optical imaging and spectroscopic techniques to diagnose, monitor, and treat diseases and medical conditions. Some common applications of biomedical optics include optical coherence tomography, fluorescence imaging, and laser therapy. Researchers in this area work to improve the understanding of biological processes and develop new ways to visualize and manipulate biological systems at the cellular and molecular level.