2.1
Ranibizumab (Lucentis, Novartis) belongs to a class of drugs that blocks the action of vascular endothelial growth factor (VEGF)‑A. By blocking the action of VEGF‑A, ranibizumab prevents abnormal blood vessels developing, thereby limiting visual loss and improving vision. Ranibizumab has a marketing authorisation for 'the treatment of visual impairment due to choroidal neovascularisation secondary to pathologic myopia'.