Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
Corneal scarring is a mark or haze in the clear front window of the eye (the cornea) after injury, infection, or inflammation. Scar tissue can scatter light and reduce sharpness, especially when the scar sits near the center of the cornea. Small scars near the edge often have little impact on day-to-day vision. Deeper or larger scars can lead to glare, halos, and ongoing blur.
read more about scarring of the cornea ...Corneal scarring can form after a corneal ulcer, including ulcers linked with contact lens wear, trauma, or eye infections. Scratches from a fingernail, a foreign body, or chemical exposure can also damage the cornea and leave a scar. Inflammation from conditions such as severe dry eye or recurrent erosions can slow healing and raise scarring risk. Prior eye surgery can leave localized scarring, especially after complications or slow recovery. Some infections, such as herpes simplex keratitis, can recur and leave repeated scars over time.
Blurred vision is common when a scar sits along the visual axis, and the blur often does not clear fully with new glasses. Glare and halos around lights can become worse at night because scar tissue scatters incoming light. A person can also notice ghosting or double edges around letters, especially on bright screens. Eye irritation can occur if the surface becomes uneven, since the tear film spreads less smoothly. Sudden pain, redness, or discharge needs prompt care because a new infection can create fresh scarring.
A slit-lamp exam lets an eye doctor see the size, depth, and location of the scar. Fluorescein dye can highlight surface defects and show whether the cornea has an active abrasion or ulcer. Corneal topography can map irregular astigmatism caused by scarring and explain distortion that persists with glasses. Optical coherence tomography of the anterior segment can help estimate scar depth in some clinics. The exam also checks for related issues, such as dry eye or eyelid disease, that can worsen surface healing.
Treatment depends on how much vision changes and where the scar sits. For mild scarring, updated glasses or rigid gas permeable contact lenses can improve clarity by masking surface irregularity. Lubricating drops and treatment for dry eye can reduce irritation when the corneal surface is rough. For superficial scars, procedures such as phototherapeutic keratectomy (PTK) can smooth the surface and reduce haze in selected cases. For deep or dense scars that block vision, corneal transplant surgery can restore clarity when other options fall short.
Most corneal scars do not fully disappear, since scar tissue is a permanent change in structure. Some mild haze can fade as swelling and inflammation settle after an injury. Vision can still improve with lenses or surface treatments even when the scar remains visible. An eye exam can clarify whether the scar is stable or still changing.
No. A small scar near the outer cornea often leaves vision unchanged because the center remains clear. A central scar is more likely to blur vision and cause glare. Depth also matters, since deeper scars scatter more light. Testing can show how much the scar changes vision in real life.
Yes, especially rigid gas permeable or scleral lenses that create a smooth optical surface over an irregular cornea. This approach can reduce distortion and improve sharpness without surgery. Comfort and fit matter, so lens selection should be guided by an eye care professional. Ongoing redness or pain during lens wear needs evaluation.
Cellular and molecular mechanisms of corneal scarring. PubMed Central (PMC). https://pmc.ncbi.nlm.nih.gov/articles/PMC9210749/. Date Accessed February 4, 2026.
Corneal Ulcer. American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/corneal-ulcer. Date Accessed February 4, 2026.
Phototherapeutic Keratectomy. EyeWiki. https://eyewiki.org/Phototherapeutic_Keratectomy. Date Accessed February 4, 2026.
Contact Lenses for Vision Correction. American Academy of Ophthalmology. https://www.aao.org/eye-health/glasses-contacts/contact-lens-102. Date Accessed February 4, 2026.
Corneal Disorders. MedlinePlus. https://medlineplus.gov/cornealdisorders.html. Date Accessed February 4, 2026.