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The Kaplan-Meier survival curve of primary penetrating keratoplasty in patients with congenital glaucoma. Out of 12 corneal grafts, 6 failed within 10 months after surgery (range 1–10 months) during the mean 80.6 months of follow-up (range 15–228 months). One year graft survival probability was 50%, and the median survival time of the grafts was 36 months
