The Study Assessing the Safety and Efficacy of OK-101 Treatment in Subjects With Neuropathic Corneal Pain

Inclusion Criteria: 1. Male or female aged ≥ 18 years. 2. Symptoms of neuropathic corneal pain for at least 3 months, such as burning, stinging, light sensitivity, discomfort, or pain. 3. Positive IVCM findings evaluated by an experienced ophthalmologist (Pedram Hamrah, M.D.): decreased nerve density AND evidence of microneuromas. 4. Females of childbearing potential must have a negative pregnancy test. 5. Best corrected distance visual acuity (BCDVA), using corrective lenses, if necessary, in the study eye of at least +1.0 Log MAR (Snellen \<20/200). 6. Satisfying all Informed Consent requirements. 7. Ability and willingness to comply with study procedures. Exclusion Criteria: 1. Evidence of any active ocular infection. 2. Evidence of any intraocular inflammation. 3. Evidence of any persistent epithelial defect/ulcer. 4. Evidence of any corneal scar/corneal edema. 5. Presence of any other ocular conditions that require topical medications during the treatment phase. 6. History of severe systemic allergy or severe ocular allergy. 7. Inability to suspend topical medications 8 days prior to the starting date. 8. Inability to continue oral medications for NCP without changes during the study duration. 9. No changes or less than 50% improvement in VAS score after topical 0.5% proparacaine hydrochloride (Alcaine, Alcon, Fort Worth, TX). 10. History of any ocular surgery within three months before study Visit 1(day 0). 11. Ocular surgery expected during the 16 weeks of the trial. 12. Use of refractive/therapeutic contact lenses during the study period. 13. Female subjects who are pregnant/have a positive pregnancy test result or are breastfeeding or intend to become pregnant during the study treatment period. 14. Drug addiction/alcohol abuse within the last year. 15. Participation in another clinical trial concurrently.