Use of microbubble ultrasound contrast agent to demonstrate the iris valve effect in human eye bank eyes

被引：15

作者：

Pavlin, CJ

Burns, PN

Foster, FS

机构：

[1] Univ Toronto, Princess Margaret Hosp, Ontario Canc Inst, Dept Ophthalmol,Ocular Oncol Serv, Toronto, ON M5G 2N9, Canada

[2] Sunnybrook Hlth Sci Ctr, Dept Med Biophys, Toronto, ON M4N 3M5, Canada

来源：

AMERICAN JOURNAL OF OPHTHALMOLOGY | 1998年 / 126卷 / 05期

关键词：

D O I：

10.1016/S0002-9394(98)00143-3

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

PURPOSE: To demonstrate that the interface between the normal iris and the lens surface functions as a flap valve. METHOD: Microbubble ultrasound contrast agent was injected into the anterior and posterior chambers of human eye bank eyes and the distribution of contrast imaged with high-frequency ultrasound. RESULTS: Contrast agent did not enter the posterior chamber when injected into the anterior chamber, but contrast agent injected into the posterior chamber easily flowed into the anterior chamber. CONCLUSIONS: The iris-lens interface normally functions as a flap valve, preventing retrograde flow from the anterior to the posterior chamber. A temporary increase in anterior chamber pressure thus results in iris concavity in pigmentary dispersion syndrome. (Am J Ophthalmol 1998;126: 719-720, (C) 1998 by Elsevier Science Inc. All rights reserved.).

引用

页码：719 / 720

页数：2