A common, serious and debilitating long term complication of hematopoietic stem cell transplant (HCST) is chronic graft-versus-host disease (GVHD). Ocular GVHD develops in up to 85% of patients with chronic GVHD. It is characterized by progressive keratitis sicca and cicatrizing ocular inflammatory surface disease with T cell mediated damage to conjunctival and corneal epithelium and lacrimal tissue. Various medical and surgical treatments have been used, such as various lubricating agents, steroid drops and ointments, cyclosporin drops, punctal plugs or cautery and partial tarsorrhaphy. However, in severe cases, none offer acceptable, long-lasting relief from pain, irritation, dryness and diminished vision associated with ocular GVHD. An alternative treatment that has previously been safely investigated is autologous serum eye drops (ASEDs). The objective of this study was to determine whether ASEDs are more effective than control (normal saline) in the treatment of severe chronic ocular GVHD in HSCT patients unresponsive to standard medical treatment.