BackgroundOcular graft-versus-host disease (oGVHD) is one of the complications after allogeneic hematopoietic stem cell transplantation (HSCT). which impairs the quality of life and may indicate poor prognosis. In this retrospective study. the aim was to investigate the characteristics of ocular surface after HSCT. https://parisnaturalfoodes.shop/product-category/vitamin-a-drops/