Microkeratome head  (μm) Central stromal thickness (μm) Punch diameter (mm)
Graft 1 300 389 8.25
Graft 2 300 384 8.00
Graft 3 300 343 8.00
Graft 4 250 417 8.25
Graft 5 300 343 8.25
Graft 6 200 242 8.25
Table1: Graft information.