A novel technique: eccentric lamellar keratolimbal allografting using a femtosecond laser.

Purpose: To report on a patient who received an eccentrically designed lamellar keratolimbal allograft prepared using a femtosecond (FS) laser to preserve peripheral curvature. Methods: A 19-year-old woman, with a pseudopterygium on the left eye resulting from dermoid excision about 11 years earlier, received an eccentric lamellar keratolimbal allograft in a procedure involving FS laser use. Corneal flaps of depths 280 and 400 mm and diameters 6.5 and 6.6 mm were eccentrically created by FS laser treatment of the recipient and donor eyes, respectively, after removal of the pseudopterygium. After amniotic membrane transplantation, the eccentrically designed corneal flap was secured with 10-0 nylon sutures. Results: Corneal flap creation was uneventful. Only minimal suturing was required for lamellar keratoplasty, and no complications occurred. Twelve months after surgery, a stable corneal surface was observed, with minimal scar formation at the graft margin and relatively good graft interface clarity. Conclusion: Eccentric lamellar keratolimbal allografting using an FS laser is an effective and time-saving surgical method to treat peripheral corneal abnormalities featuring corneal opacity.