title: Comparison of the Surgical Outcomes of Various Methods of Endothelial Keratoplasty.
abstract: OBJECTIVE
  The objective of this study was to evaluate the outcomes of various techniques of endothelial keratoplasty (EK) including deep lamellar endothelial keratoplasty (DLEK), Descemet stripping endothelial keratoplasty (DSEK), and Descemet stripping automated endothelial keratoplasty (DSAEK).
  
  
  METHODS
  This was a retrospective comparative case series.
  
  
  METHODS
  The medical records of 48 consecutive patients who have undergone EK in a tertiary eye center between January 2005 and June 2011 were reviewed. Information related to demographics, visual acuity, corneal endothelial cell count, and postoperative complications was recorded.
  
  
  RESULTS
  The series included 11 eyes with DLEK, 11 eyes with DSEK, and 26 eyes with DSAEK. There was no significant difference in visual outcomes, endothelial cell loss, and postoperative complications between the 3 groups 1 year after surgery. The mean logMAR visual acuity at 12 months was 0.54 (SD, 0.26) for DLEK, 0.55 (SD, 0.47) for DSEK, and 0.63 (SD, 0.48) for DSAEK, respectively. The 6-month endothelial cell density loss was 48.4%, 39.2%, and 47.5% for the DLEK, DSEK, and DSAEK groups, respectively. Early postoperative graft dislocation occurred in 1 (9%) of the DLEK cases, 2 (18%) of the DSEK cases, and 1 (4%) of the DSAEK cases. All of these cases were successfully repositioned.
  
  
  CONCLUSIONS
  Despite the various evolution and surgical modifications and development in EK in the past few years, the visual outcomes and postoperative complications between DLEK, DSEK, and DSAEK were comparable.
authors.affiliation: From the *Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong; and †Hospital Authority Ophthalmic Service, Hong Kong Eye Hospital, Kowloon, Hong Kong SAR, People's Republic of China.
authors.forename: Tommy C Y
authors.initials: TC
authors.lastname: Chan
authors.forename: Douglas K T
authors.initials: DK
authors.lastname: Lam
authors.forename: Wai-Kwan
authors.initials: WK
authors.lastname: Wu
authors.forename: Victoria W Y
authors.initials: VW
authors.lastname: Wong