Study to Evaluate the Safety and Efficacy of CSB-001 Ophthalmic Solution 0.1% in Subjects With Corneal Scars

• CSB-001 Ophthalmic Solution 0.1% (Biological): CSB-001: human recombinant dHGF (5-amino acid deleted hepatocyte growth factor)

Primary outcomes

• Safety as Assessed by Adverse Event Reporting [Day 1 through Day 56]: Incidence of ocular and systemic adverse events
• Safety as Assessed by Slit-lamp Biomicroscopy [Screening through Day 56]: Change from baseline in staining using NEI scale (0 = absent to 3 = severe for 5 areas of the cornea) with Grade 0 (no staining) to maximum of Grade 15
• Safety as Assessed by Best-Corrected Distance Visual Acuity [Screening through Day 56]: Change from baseline using the Early Treatment Diabetic Retinopathy Study (EDTRS) visual acuity chart

Secondary outcomes

• Efficacy as Assessed by Area of Corneal Scar [Screening through Day 56]: Area of corneal scar as measured by slit lamp and anterior segment optical coherence tomography (AS-OCT) imaging
• Efficacy as Assessed by Maximum Depth of Cornea Scar [Screening through Day 56]: Depth measured with AS-OCT imaging
• Efficacy as Assessed by Volume of Scar [Screening through Day 56]: Volume measured with AS-OCT imaging
• Efficacy as Assessed by Density of Scar [Screening through Day 56]: Density based on AS-OCT and Pentacam imaging
• Efficacy as Assessed by Contrast Sensitivity [Screening through Day 56]: Contrast sensitivity measured using Pelli-Robson chart
• Efficacy as Assessed by Distance Visual Acuity [Screening through Day 56]: Visual acuity measured using the EDTRS visual acuity chart

Sex: All, ages: 18 Years to 80 Years

Inclusion Criteria:

* Centrally or paracentrally located scar approximately ≤5 mm and ≥2 mm in the greatest diameter and with a portion of the scar within approximately 3.5 mm of the optical center of the cornea assessed at Screening and confirmed at Baseline, and subject reports ability to detect any effect of scar on any element of vision.
* Eye with a recent corneal insult approximately ≤30 days and ≥7 days from the Screening Visit.
* Corneal insult includes but is not limited to mechanical / chemical / thermal injury, bacterial keratitis, PRK, and contact lens related ulcer.
* Eye with observed rate of epithelialization that in the investigator's opinion does not demonstrate clinical characteristics of a slow healing (persistent defect) cornea.
* Subjects must have the ability and willingness to comply with study procedures.

Exclusion Criteria:

* Corneal scar that encompasses more than approximately 50% of the depth of the remaining stroma as guided by ASOCT image at the Screening Visit.
* Maximum scar diameter greater than approximately 5 mm without prior approval by the Sponsor based on Screening Visit images.
* No portion of the scar is within the approximate 3.5 mm of the optical center of the cornea based on Screening Visit images.
* Any active ocular infection in the opinion of the investigator (bacterial, viral, fungal, or protozoal) at the Screening or Day 1 Visits. Subjects with an active bacterial infection at the Screening or Day 1 Visit in the opinion of the investigator may be rescheduled to reassess the status of the infection and continue in the study if infection is deemed not active.
* Ocular surgery planned during the study treatment period.
* Presence or history of any ocular or systemic disorder, condition or procedure that might hinder the efficacy of the study treatment or its evaluation, could possibly interfere with the interpretation of study results, or could be judged by the investigator to be incompatible with the study visit schedule or conduct.

Note: Other inclusion/exclusion criteria apply.