Abstract Background Graft-versus-host disease (GVHD) is the most common complication after bone marrow allogeneic hematopoietic stem cell transplantation (allo-HSCT). The incidence of posterior segment complications was significantly lower than that of ocular surface lesions. Up to now. there has been no report about optic neuropathy associated with GVHD. https://excellentphoto.shop/product-category/cameras/