眼科
医学
眼底(子宫)
隐形眼镜
角膜
玻璃体切除术
超声乳化术
糖尿病性视网膜病变
白内障手术
镜头(地质)
视网膜
平衡盐溶液
随机对照试验
外科
糖尿病
视力
化学
光学
物理
有机化学
内分泌学
作者
Zizhong Hu,Ye Ding,Xinhua Zheng,Songtao Yuan,Jia Li,Ping Xie,Qing-Huai Liu
出处
期刊:Eye & Contact Lens-science and Clinical Practice
[Ovid Technologies (Wolters Kluwer)]
日期:2018-11-01
卷期号:44 (2): S355-S360
被引量:4
标识
DOI:10.1097/icl.0000000000000491
摘要
Purpose: To design a rigid contact lens (CL) to be used in combination with a wide-angle viewing system and analyze its protection for corneal epithelial during vitreous-retinal surgery. Methods: A thin and lightweight rigid CL was designed and constructed. The impact of the CL on the visualized fundus range was evaluated using a concrete eye model. Patients with severe proliferative diabetic retinopathy (PDR) were randomized to either the CL group, corneal protective agent (CPA) group, or balanced salt solution (BSS) group. All patients underwent phacoemulsification and a standard 23-gauge three-port vitrectomy. Surgery time and corneal fluorescein staining score (FSS) postoperatively were mainly measured. Results: In the eye model, a larger area of fundus was visualized with the use of our CL under 128 D or 60 D Resight lens. The mean surgery time was 51.36±8.06 min, 50.89±8.26 min, and 55.46±9.14 in CL, CPA, and BSS group, respectively (F=2.325, P=0.105). In eight eyes in the BSS group, corneal epithelial layer was peeled off because the dryness of the cornea could not maintain a clear fundus image. The FSS in BSS group was markedly higher than that of CL and BSS group 1 day (P<0.001), 3 days (P<0.001), and 7 days (P=0.002) postoperatively. There was no statistical significance of the FSS between CL and CPA group at each follow-up endpoint. Conclusions: The CL that we designed can slightly enlarge the visible fundus range and efficiently protect corneal epithelium during vitrectomy for patients with PDR.
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