Fig. 2
From: Bowman layer transplantation in the treatment of keratoconus
Intraoperative video-stills of a Bowman layer (BL) transplantation. (a) A scleral tunnel incision and (b) paracenteses are made. (c) Then, the anterior chamber is filled with air, and (d-f) a manually dissected mid-stromal pocket is created, using different sizes spatulas. (f) As an indication for the dissection depth, the ‘thin black line’ alongside the spatula can be used. After removing most air from the anterior chamber, (g, h) the BL graft is inserted into the pocket atop of a glide, and (i) then carefully unfolded and centered with an 30G cannula. (j) After complete unfolding and positioning, the BL graft is sandwiched between the anterior and posterior stromal layers. No sutures are necessary to fixate the graft or to close the tunnel incision