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Long-term results of penetrating keratoplasty using a single or double running suture technique
Leopoldo Spadea1, Francesco Cifariello, Guido Bianco
1Department of Ophthalmology, University of L'Aquila, Italy. lspadea@cc.univaq.it
Background:
Corneal astigmatism changes after penetrating keratoplasty (PK) with single running suture (SRS) or double running suture (DRS) were evaluated in this prospective randomized study.
Methods:
Sixty-eight consecutive eyes underwent PK: 35 received a SRS and 33 an anti-torque DRS using the same Hanna Suction System. All sutures were removed between 12 and 20 months after surgery.
Results:
Within the first month after PK, a statistically significant difference was noted, with a lower mean value of astigmatism for the DRS group. The final mean postoperative videokeratographic astigmatism was 3.51+/-1.93 and 3.42+/-1.94 in the SRS and DRS group respectively (36 months' follow-up).
Conclusions:
Although the final astigmatism was about the same in the two suture groups, the DRS seems to lead to faster restoration of visual function due to early stability.