title: The effect of donor age on corneal transplantation outcome results of the cornea donor study.
abstract: OBJECTIVE
  To determine whether graft survival over a 5-year follow-up period using corneal tissue from donors older than 65 is similar to graft survival using corneas from younger donors.
  
  
  METHODS
  Multicenter prospective, double-masked, controlled clinical trial.
  
  
  METHODS
  One thousand ninety subjects undergoing corneal transplantation for a moderate-risk condition (principally Fuchs' dystrophy or pseudophakic corneal edema); 11 subjects with ineligible diagnoses were not included.
  
  
  METHODS
  Forty-three participating eye banks provided corneas from donors in the age range of 12 to 75 with endothelial cell densities of 2300 to 3300 cells/mm(2), using a random approach without respect to recipient factors. The 105 participating surgeons at 80 sites were masked to information about the donor cornea including donor age. Surgery and postoperative care were performed according to the surgeons' usual routines. Subjects were observed for 5 years.
  
  
  METHODS
  Graft failure, defined as a regraft or a cloudy cornea that was sufficiently opaque as to compromise vision for a minimum of 3 consecutive months.
  
  
  RESULTS
  The 5-year cumulative probability of graft survival was 86% in both the <66.0 donor age group and the >/=66.0 donor age group (difference = 0%, upper limit of 1-sided 95% confidence interval = 4%). In a statistical model with donor age as a continuous variable, there was no significant relationship between donor age and outcome (P = 0.11). Three graft failures were due to primary donor failure, 8 to uncorrectable refractive error, 48 to graft rejection, 46 to endothelial decompensation (23 of which had a prior, resolved episode of probable or definite graft rejection), and 30 to other causes. Distributions of the causes of graft failure did not differ between donor age groups.
  
  
  CONCLUSIONS
  Five-year graft survivals for cornea transplants at moderate risk for failure are similar using corneas from donors >/= 66.0 years and donors < 66.0. Surgeons and patients now have evidence that corneas comparable in quality to those used in this study from donors through age 75 are suitable for transplantation.
authors.affiliation: Society of Northeastern New York (Lions Eye Bank of Albany), Albany, New York, USA. rgal@jaeb.org
authors.forename: Robin L
authors.initials: RL
authors.lastname: gal
authors.forename: Mariya
authors.initials: M
authors.lastname: Dontchev
authors.forename: Roy W
authors.initials: RW
authors.lastname: Beck
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Mannis
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Holland
authors.forename: Craig
authors.initials: C
authors.lastname: Kollman
authors.forename: Steven P
authors.initials: SP
authors.lastname: Dunn
authors.forename: Ellen L
authors.initials: EL
authors.lastname: Heck
authors.forename: Jonathan H
authors.initials: JH
authors.lastname: Lass
authors.forename: Monty M
authors.initials: MM
authors.lastname: Montoya
authors.forename: Robert L
authors.initials: RL
authors.lastname: Schultze
authors.forename: R Doyle
authors.initials: RD
authors.lastname: Stulting
authors.forename: Alan
authors.initials: A
authors.lastname: Sugar
authors.forename: Joel
authors.initials: J
authors.lastname: Sugar
authors.forename: Bradley
authors.initials: B
authors.lastname: Tennant
authors.forename: David D
authors.initials: DD
authors.lastname: Verdier
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D015715:Corneal Edema / Q000209:etiology / Q000601:surgery*; D016039:Corneal Transplantation; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D005642:Fuchs' Endothelial Dystrophy / Q000601:surgery*; D006085:Graft Survival; D006801:Humans; D008297:Male; D008875:Middle Aged; D019591:Pseudophakia / Q000150:complications; D014019:Tissue Donors; D016896:Treatment Outcome