STSP-0902

This is a Phase II, double-blind, placebo-controlled study to evaluate the safety and efficacy of STSP-0902 ophthalmic solution in patients with neurotrophic keratitis (NK). The study plans to enroll 48 patients with Mackie Stage 2 or 3 NK affecting one or both eyes. Eligible subjects will be randomized 1:1:1 into three dosing groups. Each dosing group will follow a drug-placebo allocation (12 active: 4 placebo). Treatment involves topical ocular administration for 8 weeks. Subjects who are not healed after the 8 weeks of masked treatment period will be permitted to receive standard of care during the follow-up period

This trial is a Phase I clinical study to evaluate the safety, tolerability, and pharmacokinetic (PK) characteristics of STSP-0902 ophthalmic solution in healthy subjects following single and multiple administrations. The study plans to enroll 80 healthy subjects and is divided into three stages: the single-dose study stage, the multiple-dose study stage, and the tear PK study stage. The single-dose and multiple-dose study stages are randomized, double-blind, placebo-controlled, dose-escalation designs, while the tear PK study stage is a single-dose, open-label design.