Effect of Donor Age on Graft Survival in Primary Penetrating Keratoplasty with Imported Donor Corneas.

However, when ECD was compared among the four donor age subgroups, the Jonckheere-Terpstra test revealed a significant trend for lower ECD values with increasing age ( p = 0.003) ( Fig. 1 ), while the Kruskal–Wallis test also suggested a significant difference among the four subgroups ( p = 0.015).

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