A Phase 1 study, Study SJP-0035/1-01, was conducted in healthy volunteers to investigate the safety, tolerability, and pharmacokinetic profile of SJP-0035 ophthalmic solution, and to determine the appropriate dose to be evaluated in patients with moderate to severe corneal epithelial disorders. A Phase 2a study, Study SJP-0035/2-01, was conducted in patients with corneal epithelial disorders to evaluate the efficacy and safety of SJP-0035.