To the best of our knowledge, the 1st Global AIGS Consensus Meeting on "Structure and Function in the Management of Glaucoma" was also the first global consensus meeting in ophthalmology. The goal was to reach an evidence-based consensus for both clinical practice and research through the use of information obtained from peer-reviewed literature describing functional and structural diagnostic testing in glaucoma. The faculty and review group consisted of leading global authorities on glaucoma diagnostic testing. The preparation for the Consensus was unique in its format (see page xii). Reports on the individual methods of Structure and Function were prepared by an expert group. This was followed by intra-function and intra-structure comparisons and, finally, by a comparison of structure versus function. All the reports were placed in the Consensus e-Room, where they could be commented on by all participants. In addition, basic aspects of this Consensus were considered, as well as the important issue of Evidence-Based Diagnosis. This intense preparation was needed in order to obtain a preliminary Consensus before the meeting. The final Consensus was formulated, based on the preliminary report and adapted following comments from the discussions. It is recognized by all who participated that this is a fluid topic, which will change considerably as further research is conducted and new knowledge is gained.