Patent ID: 8382284

Claim:
A system comprising: an optical source, the optical source comprising a control port, the optical source for selectably providing each of a plurality of predetermined wavelength optical signals in dependence upon a plurality of control wavelength signals, a first wavelength optical signal of the plurality of predetermined wavelength optical signals provided in response to a first control wavelength signal and other than provided in response to a second control wavelength signal, a second wavelength optical signal of the plurality of predetermined wavelength optical signals comprising light at a second wavelength absent from the first wavelength optical signal; a detector, the detector comprising an output port, the detector for receiving reflected optical signals, generating digital representations of the reflected optical signals, and providing the digital representations of the reflected optical signals at the output port as electrical signals; an optical coupling, the optical coupling for coupling the each of the plurality of predetermined wavelength optical signals to a patient's eyeball, receiving the reflected optical signals returned from the eyeball of the patient, and providing the reflected optical signals to the detector; and, a controller, the controller being electrically connected to the control port and the output port, the controller for providing the plurality of control wavelength signals to the control port, receiving the electrical signals from the output port, and providing processed electrical signals including a first processed electrical signal determined at least in dependence upon a first electrical signal received from the output port in response to providing the first control wavelength signal to the control port, and a predetermined factor.