The invention provides a computer implemented method for calculating a chronic disease risk index for a patient undergoing a first examination, the method comprising providing a first result of the first examination wherein the first examination is selected from a group of medical imaging method; providing a second result of a second examination wherein the second examination being related to the examination of the patient's eye; Processing in combination the first result and the second such as to calculated a combined result wherein the combined result relates the first and the second result; Classifying the combined result; Calculating the risk index for the patient. The risk index is based on the combined result or on the classified combined result.