They are permanent marks that develop on the cornea after a significant injury caused by trauma, infections, or surgical interventions. These scars alter the typical structure and function of the corneal tissue.
The main consequence is the loss of corneal transparency, which interferes with the way light passes to the retina. Depending on the size and location of the scar, this can lead to blurred vision, visual distortion, or increased sensitivity to light.
The surgeon precisely removes the affected tissue using a trephine or a femtosecond laser. The donated cornea is then shaped and carefully secured with fine sutures. This procedure restores corneal transparency and curvature, thereby improving vision.