Comparison of Surgically-induced Astigmatism after Combined Phacoemulsification and 23-Gauge Vitrectomy: 2.2-mm vs. 2.75-mm Cataract Surgery.
10.3341/kjo.2014.28.2.130
- Author:
Yong Kyu KIM
1
;
Yong Woo KIM
;
Se Joon WOO
;
Kyu Hyung PARK
Author Information
1. Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea. sejoon1@snu.ac.kr
- Publication Type:Original Article ; Comparative Study ; Research Support, Non-U.S. Gov't
- Keywords:
Microincision;
Phacoemulsification;
Surgically-induced astigmatism;
Transconjunctival sutureless vitrectomy
- MeSH:
Aged;
Astigmatism/diagnosis/*etiology;
*Cataract;
Cornea/surgery;
Corneal Topography/methods;
Female;
Humans;
Lens Implantation, Intraocular/*adverse effects/methods;
Male;
Middle Aged;
Phacoemulsification/*adverse effects/methods;
Postoperative Complications/diagnosis/etiology;
Sclera/surgery;
Vitrectomy/*adverse effects/instrumentation/methods
- From:Korean Journal of Ophthalmology
2014;28(2):130-137
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: The 2.2-mm microincision cataract surgery and small-gauge vitrectomy system is known to result in less surgically-induced astigmatism (SIA) in comparison to conventional surgical methods. We compared the amounts of SIA after combined phacoemulsification and 23-gauge transconjunctival sutureless vitrectomy (23G-TSV) using the 2.2-mm microincision and 2.75-mm standard incision methods. METHODS: We studied 59 patients (61 eyes) who underwent combined phacoemulsification and 23G-TSV from November 2008 to September 2012. Twenty-eight patients (28 eyes) underwent 2.2-mm microincision coaxial phacoemulsification, and 31 patients (33 eyes) underwent 2.75-mm standard incision phacoemulsification. SIA was evaluated using Naeser's polar method with the simulated keratometric values obtained from corneal topography. Preoperative and 1-week and 1-month postoperative KP (Naeser's polar value along the specific axis) and DeltaKP values were compared between the 2.2-mm microincision and 2.75-mm standard incision groups. RESULTS: One week after surgery, both groups exhibited similar amounts of SIA (-DeltaKP[120], 0.40 +/- 0.41 vs. 0.51 +/- 0.56 diopters [D]; p = 0.390). One month after surgery, however, the amount of SIA was significantly smaller in the 2.2-mm microincision group as compared to the 2.75-mm standard incision group (-DeltaKP[120], 0.31 +/- 0.54 vs. 0.56 +/- 0.42 D; p = 0.045). CONCLUSIONS: In combined phacoemulsification with 23G-TSV, 2.2-mm microincision coaxial phacoemulsification induces less SIA than does 2.75-mm standard coaxial phacoemulsification.
