Real time opto-physiological monitoring method and system

A method of monitoring a subject with an opto-physiological sensor system, the opto-physiological sensor system comprising at least one sensor, the method comprising:

• obtaining a model of the optical properties of at least one body tissue type to be monitored, wherein the model of the optical properties comprises a definition of static and dynamic components of transmitted optical power and a definition of a source-detector separation related to a normalised path length for an illumination source of the opto-physiological sensor;
• obtaining an indication of at least one physiological property of the subject from a wearable device comprising the at least one sensor worn by the subject;
• obtaining an indication of at least one physical variable from the wearable device comprising the at least one sensor worn by the subject;
• determining, using the model, how the at least one physical variable affects the at least one physiological property;
• and
• determining a corrected value for the physiological property based on the determination of how the at least one physical variable affects the at least one physiological property.