ZKY001 Eye Drops in the Treatment of Corneal Epithelial Defects in a Phase Ⅱ Clinical Trial

Inclusion Criteria: 1. Age of 18-70 years old, both sexes; 2. patients were diagnosed as primary pterygium with nasal onset, and the head tip of pterygium invaded the cornea ≥3mm and ≤5mm, and underwent pterygium excision combined with conjunctival autotransplantation with autologous limbal stem cells; 3. Except for the pterygium neck under the slit lamp during the screening period, the limbal anatomy was normal without obvious abnormalities (e.g., scar, neovascularization that had invaded the cornea, or pseudopterygium); Exclusion Criteria: 1. secondary pterygium, recurrent pterygium, pseudopterygium, bilateral pterygium or conjunctival tumor; 2. Schirmer test I (topical anesthesia) ≤3mm/5min; 3. severe blepharitis and/or severe meibomian gland disease, recurrent corneal erosion, chronic corneal disease, chemical burn and other ocular diseases that seriously affect ocular surface structure or function; 4. patients with syphilis, Sjogren's syndrome, cicatricial pemphigoid and other systemic diseases that seriously affect ocular surface structure or function; 5. rheumatoid arthritis, Sjogren syndrome, systemic lupus erythematosus, AIDS and other autoimmune diseases;