Corneal Scarring: Causes, Treatment, and the Possibility of Restoring Vision

What Is Corneal Scarring?

Corneal scarring is a buildup of opaque fibrous tissue where healthy, transparent corneal tissue used to be — the result of the body's attempt to repair damage to the cornea. Scars elsewhere on the body heal and are forgotten. The cornea is different: it cannot tolerate incomplete repair, because any opacity sits directly in the path of light and affects vision.

Causes of Corneal Scarring

The usual causes are viral infections (herpes keratitis is the most common), bacterial or fungal ulcers, traumatic injuries such as cuts and burns, very advanced keratoconus (acute hydrops), and some rare systemic diseases.

How Scars Affect Vision

Location matters more than anything. Peripheral scars away from the visual axis cause minimal or no impact. Scars in the central area affect visual acuity directly. Extensive thick scars mean significant loss of clarity — and usually a surgical solution.

Treatment Options

In early cases, antiviral or antibacterial medications eliminate the cause. Once the eye has stabilized, PTK (laser phototherapeutic keratectomy) can remove superficial scars. Deep, extensive scars call for a transplant: DALK if the endothelium is healthy, PKP if the scarring extends through the full corneal thickness.

Evaluating corneal scars requires careful specialist examination. Contact Dr. Ahmed Shaarawy's clinic.