Aston University researcher, Professor Igor Meglinski, developed a technique using Orbital Angular Momentum (OAM) light, which could revolutionize non-invasive diagnostics and optical communication. OAM light retains phase characteristics through scattering media, enabling detection of small changes in refractive index with high accuracy, potentially eliminating invasive procedures like surgery or biopsies. The research, published in Nature journal Light Science & Application, opens possibilities for advanced biomedical applications and secure optical communication systems.