[Changes in the visual fields following filtering surgery in advanced glaucoma].

The authors report about the results of a preliminary study concerning the changes of glaucomatous field after glaucoma filtering surgery in patients with advanced glaucoma. Mesopic campimetry had been selected because of its precision for central field defects. The first results appear to be favourable. No patient lost central vision suddenly after surgery. The authors have tried to research predictive risk factors. The factors that seem to be the most important to consider are the preoperative campimetric shape and the angle anatomy.