Fig. 3
From: Corneal surgery in keratoconus: which type, which technique, which outcomes?
Graft-host junction alignment after suturing. Normal appearance of the graft-host junction with correct aligning of Bowman’s layer of the donor and host corneas, with needle passed at a 90 % depth on both sides (a). If care is not taken in cases of a thin recipient cornea, steps will remain at the graft-host junction, leaving an irregular astigmatism and exposed sutures that need to be replaced (b). To avoid this, a partial thickness bite (50–70 % depth) should be performed at the donor side (c)