Retinal vessel diameter in young patients with open‐angle glaucoma: comparison between high‐tension and normal‐tension glaucoma

Editor, It remains controversial whether normal-tension glaucoma (NTG) and high-tension glaucoma (HTG) differ in their pathogenesis. Some investigators demonstrated structural or functional difference, whereas others reported no difference between them. Regarding the diameter of retinal vessels (RVD), two previous studies reported no difference in RVD between HTG and NTG (Mitchell et al. 2005; Amerasinghe et al. 2008). However, these studies...