Patent ID: 7853315

Claim:
A device for use in non-invasive monitoring of a human or animal subject's bodily functions in vivo, comprising: a first optical system for identifying the centre of a pupil of an eye of the subject, said first system comprising: a first light source for directing light towards the eye, first receiving means for receiving light reflected from the iris of the eye, and first processing means for determining the position of the centre of the pupil from the light reflected from the iris; a second optical system comprising: a second light source for directing light to a focussing means for focussing light substantially in the centre of the plane of the pupil and directing the focussed light onto the retina of the eye and providing a Maxwellian view of the eye, second receiving means for receiving light reflected from the retina and back through the pupil and for monitoring intensity of at least one selected wavelength of said reflected light, and second processor means for analysing the light reflected from the structures and determining an absorbance/reflectance characteristic of said retina; and alignment means for aligning the second system with the centre of the pupil as determined by the first optical system.