比较两种用于小瞳孔白内障手术的瞳孔扩张器。
Comparison of 2 pupil expansion devices for small-pupil cataract surgery.
机构信息
From the Doheny Eye Institute (Tian, Garcia, Karanjia, Lu) and the Doheny Eye Center (Tian, Lu, Karanjia), David Geffen School of Medicine, University of California Los Angeles, and the University of California-Irvine School of Medicine (Garcia), Irvine, California, USA; the Ottawa Hospital Research Institute (Karanjia), and the Ottawa Eye Institute (Karanjia), University of Ottawa, Ottawa, Ontario, Canada.
From the Doheny Eye Institute (Tian, Garcia, Karanjia, Lu) and the Doheny Eye Center (Tian, Lu, Karanjia), David Geffen School of Medicine, University of California Los Angeles, and the University of California-Irvine School of Medicine (Garcia), Irvine, California, USA; the Ottawa Hospital Research Institute (Karanjia), and the Ottawa Eye Institute (Karanjia), University of Ottawa, Ottawa, Ontario, Canada.
出版信息
J Cataract Refract Surg. 2016 Aug;42(8):1235-7. doi: 10.1016/j.jcrs.2016.07.002.
UNLABELLED
We compared the degree of postoperative iris distortion with the diamond-shaped Malyugin ring and the circular Visitec I-Ring iris dilators using postoperative iris photographs in a patient with bilateral small nondilating pupils. Routine phacoemulsification was performed in the right eye with the assistance of a Malyugin ring for iris dilation. One month later, the same procedure was performed in the left eye using the circular ring for iris dilation. Anterior chamber slitlamp photographs were taken of both eyes. The amount of distortion in the postoperative pupils was calculated using the ratio of the postoperative pupil area to the area of the circle of best fit. The circular ring, constructed from a softer material, resulted in 11% distortion and the Malyugin ring, 49%, suggesting that the circular ring caused less trauma to the iris.
FINANCIAL DISCLOSURE
None of the authors has a financial or proprietary interest in any material or method mentioned.
目的：比较应用 Malyugin 环和 Visitec I-Ring 虹膜扩张器行后发性瞳孔变形的程度。
方法：对 1 例双侧小瞳孔非扩大患者，采用术后虹膜照片比较术后虹膜变形程度。右眼行常规超声乳化术，应用 Malyugin 环行虹膜扩张。1 个月后，左眼行同样手术，应用圆形环行虹膜扩张。拍摄双眼前房裂隙灯照片。采用术后瞳孔面积与最佳拟合圆面积的比值计算术后瞳孔变形程度。
结果：圆形环由更柔软的材料制成，导致 11%的变形，Malyugin 环导致 49%的变形，提示圆形环对虹膜创伤较小。
结论：圆形环引起的后发性瞳孔变形小于 Malyugin 环。
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