MONITORING BLOOD SUBSTANCES USING SELF-SAMPLED TEARS

摘要

A method and apparatus for non-invasively determining the concentration of a substance in blood, such as glucose, include a sample portion (12) arranged for contacting an eye region of a user to obtain a tear fluid sample, a sensor (21) in communication with the sample portion (12) for generating a signal related to the tear substance concentration, and a processor (44) in communication with the sensor (21) for determining a blood substance concentration corresponding to the tear substance concentration.