The graft must be in contact with good corneal stroma in as great an area as possible, otherwise satisfactory clarity will not result. The recent trend to the use of larger grafts has been attended with greater visual success. Scarring at the edges of a large graft has less chance of encroaching on the central visual area. The graft must not be large enough to interfere with the angle of the anterior chamber or to allow incarceration or prolapse of the iris at the edges. Beveling of the edges of the graft or the recipient cornea is not necessary.
A look at the past.... Arch Ophthalmol. 2000;118(2):197. doi:10.1001/archopht.118.2.197