Abstract:
PURPOSE:To evaluate visual outcomes and astigmatism in patients who underwent penetrating keratoplasty (PK) with 2 different incision techniques. DESIGN:Retrospective comparison of a consecutive surgical series. PARTICIPANTS:Fifty-seven consecutive patients who underwent PK at the University of California, Irvine, academic referral practice. METHODS:A comparison of 49 eyes of 43 patients that underwent femtosecond laser zig-zag incision pattern PK versus 17 eyes of 14 patients that underwent conventional Barron suction trephination PK performed contemporaneously. All PKs were closed with an identical, 24-bite running nylon suture technique. MAIN OUTCOME MEASURES:Topographically determined astigmatism, best spectacle-corrected visual acuity (BSCVA), and recovery of full visual potential. RESULTS:The postoperative follow-up ranged from 1 to 12 months. There was a significant difference in average astigmatism between the groups at postoperative month 1 (P = 0.013) and 3 (P = 0.018). By month 3, the average astigmatism was 3 diopters (D) in the zig-zag group and 4.46 D in the conventional group. Of the patients with normal macular and optic nerve function (n(ZZ) = 32; n(con) = 14), a significant difference in BSCVA was seen at month 1 (P = 0.0003) and month 3 (P = 0.006) with 81% of the zig-zag group versus 45% of the conventional group achieving BSCVA of > or =20/40 by month 3 (P = 0.03). CONCLUSIONS:The femtosecond laser generated zig-zag-shaped incision results in a more rapid recovery of BSCVA and induces less astigmatism compared with conventional blade trephination PK. FINANCIAL DISCLOSURE(S):Proprietary commercial disclosure may be found after the references.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Farid M,Steinert RF,Gaster RN,Chamberlain W,Lin Adoi
10.1016/j.ophtha.2009.05.003subject
Has Abstractpub_date
2009-09-01 00:00:00pages
1638-43issue
9eissn
0161-6420issn
1549-4713pii
S0161-6420(09)00484-9journal_volume
116pub_type
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