This was a Phase 2, randomized, double-masked, controlled, crossover, single-center study to investigate ASEDs in participants with severe chronic ocular GVHD. During the initial crossover phase of the study, participants participated in a two-period, six-month, crossover study in which participants were randomized to one of two treatment sequence groups. The two groups were: 1) daily administration of ASEDs for the first three months and then crossover to control (normal saline) eye drops beginning at Month 3 through Month 6, or 2) daily administration of control (normal saline) eye drops for the first three months and then crossover to ASEDs beginning at Month 3 through Month 6. Participants in both groups applied the assigned drops four times per day for six months, as well as maintained their current standard ocular GVHD therapy. Following the initial crossover phase, beginning at the Month 6 visit, participants were provided ASEDs as open-label treatment on an as-needed basis until study completion. As of June 2015, participants were informed to discontinue use of the IP and send it back the NIH Pharmacy. During the first year, required clinic visits occurred at Baseline, Months 3, 6 and 12 with required telephone follow-up visits at Months 7 and 9. Following the Month 12 visit, participants were evaluated every six months, alternating telephone follow-up visits with clinic visits, until the last enrolled participant reached his/her Month 12 visit. At the discretion of the Investigator, participants who did not complete the Month 12 visit had the most recent study visit constitute as the final safety visit, otherwise the participant was scheduled for a final safety visit within 4 1/2 months. Participants who already surpassed the Month 12 visit were scheduled for a final safety visit within 4 1/2 months.