This procedure is appropriate for those patients with damage restricted to the outer layers of the cornea, such as Keratoconus. Several layers of corneal tissue are removed from the patient’s eye and replaced with the corresponding tissue from a donor’s eye.
Since more natural tissue is maintained in a DALK procedure, graft rejection is less likely than penetrating keratoplasty.
Indications for Deep Anterior Lamellar Keratoplasty
DALK may be indicated in cases of corneal diseases affecting the front and middle layers of the cornea, such as:
- Corneal scarring
- Anterior corneal dystrophies