Burr W E, Brown M F, Eberhard M L
University of Arkansas for Medical Sciences, Harvey and Bernice Jones Eye Institute, Little Rock, USA.
Ophthalmology. 1998 Aug;105(8):1494-7. doi: 10.1016/S0161-6420(98)98035-6.
A female patient, resident in the state of Colorado, presented with iritis of the right eye. Slit-lamp examination showed the presence of a thin, threadlike worm entwined in the cornea. The patient was taken to surgery for removal of the parasite.
A case report.
A 3-mm-long supertemporal incision was made in the cornea and further dissected until the worm could be grasped and removed by gentle traction.
The worm, a filarial nematode, was identified as a member of the genus Onchocerca, most likely Onchocerca cervicalis, a natural parasite of horses. The patient had an uneventful recovery, and 1 week after surgery, her visual acuity, intraocular pressure, and corneal edema were all resolving.
In the United States and elsewhere, most cases of zoonotic filarial infection involving the eye are caused by Dirofilaria or Dipetalonema-like worms. However, the current case was caused by a species of Onchocerca. This is the first case of zoonotic Onchocerca from the eye to be reported, only the second case of zoonotic Onchocerca in the United States, and the seventh case worldwide. The worm was removed surgically, and the patient had an uneventful recovery.
一名居住在科罗拉多州的女性患者出现右眼虹膜炎。裂隙灯检查显示角膜中有一条细的、线状的蠕虫缠绕。患者被送往手术室摘除寄生虫。
病例报告。
在角膜上做一个3毫米长的颞上切口，并进一步解剖，直到可以通过轻柔牵引抓住并摘除蠕虫。
该蠕虫为丝状线虫，被鉴定为盘尾丝虫属的一员，很可能是马的天然寄生虫——马盘尾丝虫。患者恢复顺利，术后1周，她的视力、眼压和角膜水肿均在消退。
在美国和其他地方，大多数累及眼部的人畜共患丝状感染病例是由恶丝虫属或类双瓣线虫属蠕虫引起的。然而，当前病例是由盘尾丝虫属的一个物种引起的。这是首例报告的眼部人畜共患盘尾丝虫病病例，是美国第二例人畜共患盘尾丝虫病病例，也是全球第七例。该蠕虫通过手术摘除，患者恢复顺利。
