Shambhu Smitha K, Murthy Praveen R
Prabha Eye Clinic and Research Centre, Bangalore, Karnataka, India.
Orbit and Oculoplasty Service, Vitreoretina Service, Prabha Eye Clinic and Research Centre, Bangalore, Karnataka, India.
Indian J Ophthalmol. 2022 Apr;70(4):1438. doi: 10.4103/ijo.IJO_630_22.
Dirofilariasis is an emerging zoonosis in India. Most of the cases from India have been reported from the states of Kerala, coastal Karnataka and Maharashtra, and a few from the North India, Orissa and Assam. Dogs, cats, foxes and other wild animals are definitive hosts for dirofilaria. Human ocular parasitosis is prevalent in geographical areas where environmental factors and poor sanitary conditions favor parasitism between humans and animals. However, in recent years, migrating population have facilitated the spread of certain parasitic diseases from endemic to non-endemic areas. We report a case of subconjunctival dirofilariasis in a 91-year-old man, who presented with features of orbital cellulitis. An intact live worm, measuring 13.5 cm, was extracted from the subconjunctival space, following which there was prompt resolution of symptoms.
Given the increase in the frequency of dirofilariasis in humans in recent years, medical practitioners should bear in mind the possibility of ocular dirofilariasis when a patient presents with an ocular or orbital inflammatory lesion.
This video illustrates various presentations of ocular dirofilaria and surgical extraction of a live worm from the subconjunctival space.
Lifecycle and human ocular manifestations of dirofilaria ared elucidated. Rare presentation of subconjunctival dirofilariasis as orbital cellulitis and its resolution following removal of the live worm has been demonstrated.
丝虫病在印度是一种新出现的人畜共患病。印度报告的大多数病例来自喀拉拉邦、卡纳塔克邦沿海地区和马哈拉施特拉邦，北印度、奥里萨邦和阿萨姆邦也有少数病例。狗、猫、狐狸和其他野生动物是丝虫的终宿主。在环境因素和卫生条件差有利于人畜间寄生的地理区域，人类眼部寄生虫病很普遍。然而，近年来，流动人口促进了某些寄生虫病从流行地区向非流行地区的传播。我们报告一例91岁男性结膜下丝虫病病例，该患者表现为眼眶蜂窝织炎症状。从结膜下间隙取出一条完整的活虫，长13.5厘米，之后症状迅速缓解。
鉴于近年来人类丝虫病发病率增加，当患者出现眼部或眼眶炎性病变时，医生应考虑眼部丝虫病的可能性。
本视频展示了眼部丝虫病的各种表现以及从结膜下间隙手术取出活虫的过程。
阐明了丝虫的生命周期和人类眼部表现。展示了结膜下丝虫病罕见地表现为眼眶蜂窝织炎以及取出活虫后症状缓解的情况。
