Trial to Evaluate Safety and Efficacy of KPI-012 Ophthalmic Solution in Participants With PCED

Inclusion Criteria: 1. Have PCED for at least 7 days prior due to an underlying condition such as diabetic keratopathy, herpetic eye disease, severe dry eye disease, limbal stem cell deficiency, infectious keratitis, neurotrophic keratitis, post ocular surgery, medical trauma, chemical burn, etc. 2. PCED measurements meet study criteria. Exclusion Criteria: 1. Any active ocular infection or any active infectious disease that could impact the PCED. 2. Severe corneal burns in the Study Eye. 3. Severe limbal stem cell deficiency in either eye. 4. The circumference affected by limbal blood vessel ischemia greater than 75% of the circumference in the Study Eye. 5. Severe blepharitis or severe meibomian gland disease. 6. Severe eyelid abnormalities in the Study Eye, contributory to the persistence of the PCED. 7. Evidence of corneal ulceration. 8. Anticipated need for punctal occlusion. 9. Use of Oxervate in the Study Eye within past 30 days. 10. History of any surgical procedure for treatment of the study PCED. 11. History of any other ocular surgery in the Study Eye within 90 days prior to screening. 12. Not willing to suspend use of contact lens in the Study Eye. 13. Any use of Botox injections to induce pharmacologic blepharoptosis in the 90 days. 14. Expected use of systemic doxycycline. 15. Any use of chemotherapeutic agents within 7 days prior to Study, or anticipated use during the study. 16. History of current drug or alcohol abuse or addiction. 17. Use of another investigational agent within 30 days. 18. Participants who are pregnant, breastfeeding, or planning a pregnancy during the study.