Method of optical measurements for determining various parameters of the patient's blood

A method of optical measurements of at least one desired parameter of blood of a specific patient extracted from optical characteristics associated with erythrocytes aggregation process during the state of the blood flow cessation, comprising:

• providing reference data in the form of a function describing diffraction effects on particles, K(x(nHb−nH2O), wherein x=2πa/λ;
• a is the size of erythrocyte, nHb is the refraction index of hemoglobin and npl is the refraction index of water, λ is the wavelength of incident radiation;
• providing the state of the blood flow cessation and maintaining said state during a predetermined period of time;
• performing measurement sessions within said predetermined time period, each measurement session including several measurements with different wavelengths of incident radiation, and obtaining measured data representative of the time dependence of light response signals;
• analyzing the measured data for determining a Rouleaux Geometry Factor (RGF) for the specific patient, the RGF characterizing the changes of the light response of blood at the state of the blood flow cessation as the function of time and wavelengths of the incident radiation, associated with the erythrocytes' aggregation.