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PK for keratoconus still stable 2 decades after the original graft

Acta Ophthalmol. doi:10.1111/j.1755-3768.2009.01525.x.

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Penetrating keratoplasty for keratoconus may last in the eye for several decades, according to a study.

Sixty-one eyes of 48 patients grafted between 1968 and 1985 were analyzed after an average of 26.9 years (range, 20.8 years to 38 years). The average age of the graft at time of examination was 82.1 years (range, 41 years to 115 years).

Twenty-eight of the eyes (46%) had best corrected visual acuity of 0.5 or greater; 49 grafts (80%) were clear at the time of examination. Mean endothelial cell density was 894 cells/mm² (range, 470 cells/mm² to 1,775 cells/mm²). Mean central corneal thickness was 0.565 mm.