Trends in Indications and Techniques of Corneal Transplantation from 1999 through 2015 at a Tertiary Referral Center in Athens, Greece

Figure 5

Column chart depicting the absolute number of keratoplasty procedures performed in each calendar year from 1999 to 2015. Penetrating keratoplasty (gray columns) was the only technique applied until DSAEK (green columns) and DMEK (red columns) were implemented (2009 and 2013, resp.). In the last year, PK was only performed in 21.4%. Significant fluctuations in the annual number of surgeries were caused by fluctuations in the number of operating surgeons as well as by graft shortage periods.