Traditionally a circular blade or trephine is used to mechanically cut a circular incision in both donor and patient. The donor cornea is then stitched into the host. With the Intralase laser, we can create “tongue and groove” patterns to ensure a good fit without any slippage. This ensures good wound apposition and theoretically should reduce astigmatism. The laser additionally creates a wound healing reaction which also creates good adhesion allowing earlier stitch removal. Visual recovery is faster than a traditional method of trephination. The video on the Femtosecond DALK page illustrates how the procedure is performed using the Femtosecond laser.