1. A method of evaluating a medical condition of a patient comprising the step of enhancing spectral signatures of an eye tissue of the patient by: (a) providing an optical device for eye inspection being optically connected to a spectral imager; (b) illuminating the eye tissue of the patient with light via the iris, viewing the eye tissue through said optical device and spectral imager and obtaining a light spectrum for each pixel of the eye tissue; (c) attributing each of said pixels a color according to its spectral signature, thereby providing an image enhancing the spectral signatures of the eye tissue; and (d) using said image to evaluate the medical condition of the patient.