Fig. 4

Postoperative day 60, slit-lamp examination revealing (a) central scar formation (black star) with vessel ingrowth on matrix-grafted cornea (blue arrow), and complete CG matrix degradation (b) more transparent central cornea in control eye. Postoperative day 90, slit-lamp examination showing (c) the transparency of matrix-grafted cornea being more limpid (black star) than (a) the cornea on day 60, but less transparent than the ungrafted cornea (d). Scanning Pentacam photographs on day 90 revealing the thickness of CG matrix-grafted cornea (e) being thicker than the control one (f). The areas indicated by the arrows in Figs. e and (c) show consistent results by two different methods. The same as for Figs. (f) and (d)