The disease affects many patients with high myopia and can be complicated by neovascularisation, i.e. an abnormal vessel that growing progressively leads to destruction of cones and rods, the retinal cells responsible for vision. This complication is one of the main causes of legal blindness in the western world and if not diagnosed and treated in time leads to irreversible loss of sight. Early diagnosis, both clinical and instrumental, is therefore of fundamental importance in order to provide the appropriate therapy.