Patent ID: 7654671
Filing Date: 2010-02-02
Classification: A61B

Abstract:
1. A device for use in non-invasive monitoring of a human or animal subject's bodily functions in vivo, having a first optical system which comprises: a) a light source to direct light into an eye of the human or animal subject, the light source directing the light in one or more pulses; and b) a light receiver to receive light returning from the eye as a result of illumination by the light from the light source, the light receiver or a processor coupled to the light receiver arranged to record at least one of a frequency or intensity of the returning light at a selected timing relative to the one or more pulses of light from the light source, said timing selected so as to reduce a proportion of light reflected from at least one of a cornea or iris or lens of the eye, wherein a focal point of the one or more pulses of light from the light source lies in a plane that is at least substantially coincident with a plane of the pupil of the eye.