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CORRESPONDENCE
Year : 2015  |  Volume : 33  |  Issue : 2  |  Page : 324-325
 

Human ocular thelaziasis: A case report from Karnataka


Department of Ophthalmology and Microbiology, Jagadguru Sri Shivarathreeswara Medical College and Hospital, Mysore, Karnataka, India

Date of Submission10-Feb-2014
Date of Acceptance19-Jul-2014
Date of Web Publication10-Apr-2015

Correspondence Address:
S K Prabhakar
Department of Ophthalmology and Microbiology, Jagadguru Sri Shivarathreeswara Medical College and Hospital, Mysore, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0255-0857.154900

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How to cite this article:
Prabhakar S K, Vijaykumar G S, Mahesh B S, Shanthamallappa. Human ocular thelaziasis: A case report from Karnataka. Indian J Med Microbiol 2015;33:324-5

How to cite this URL:
Prabhakar S K, Vijaykumar G S, Mahesh B S, Shanthamallappa. Human ocular thelaziasis: A case report from Karnataka. Indian J Med Microbiol [serial online] 2015 [cited 2019 Aug 17];33:324-5. Available from: http://www.ijmm.org/text.asp?2015/33/2/324/154900


Dear Editor,

We read the article titled "Ocular thelaziasis in a 7-month-old infant" in Indian Journal of Medical Microbiology 2014 volume 32 page numbers 84-6 with great interest. [1] We congratulate the authors for highlighting the importance of Human ocular Thelaziasis (HOT) as a public health problem and emphasising on discovery of the vector and transmitting the disease in India. Thelazia callipaeda (TC) first described in 1910 in a Chinese dog. HOT in India was first reported from Yercaud, Salem District in 1948. [2]

We describe a similar episode in a 74-year-old male patient reported during July month 2008 from northern Karnataka who presented with foreign body sensation in the right eye following cattle tail injury. Five adult worms were extracted and confirmed as male worms of TC as reported by CDC, Atlanta. Approximate global data is shown in [Table 1].The life cycle of HOT heralds with first-stage larvae that harbour in the lacrimal secretions of carnivorous/bovine animals. Arthropod vectors feed on such lacrimal secretion-ingested larvae that undergo three molts inside the midgut in 2-3 weeks to develop into third-stage larvae that are infectious to humans. Third-stage larvae are then transmitted to another susceptible host by the vector and develop into adult form within 35 days in the conjunctival sac of the infected person. [3]
Table 1: Global estimate of Human ocular thelaziasis


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A case of intraocular involvement with rhegmatogenous retinal detachment and vitreous inflammation causing visual disturbances reported although serious damage to intraocular structures is unusual. [4] The live worms are removed successfully through parsplana vitrectomy. [5] Interestingly, the worm extruded during the intracapsular cataract surgery. [6] The prevalence of HOT is an important adverse health indicator of very poor living conditions. Prevention can be promoted by adopting protective measures like using bed nets, maintaining personal hygiene and facial cleanliness while sleeping, keeping surroundings clean and creating public awareness about the disease.

 
 ~ References Top

1.
Handique AK, Tamuli A, Khan AM. Ocular thelaziasis in a 7-month-old infant. Indian J Med Microbiol 2014;32:84-6.  Back to cited text no. 1
[PUBMED]  Medknow Journal  
2.
Friedmann M. Thelazia callipaeda, the oriental eye worm. Antiseptic 1948;45:620-6.  Back to cited text no. 2
    
3.
Otranto D, Lia RP, Buono V, Traversa D, Giangaspero A. Biology of Thelazia callipaeda (Spirurida, Thelaziidae) eyeworms in naturally infected definitive hosts. Parasitology 2004;129:627-33.  Back to cited text no. 3
    
4.
Singh TS, Singh KN. Thelaziasis: Report of two cases. Br J Ophthalmol 1993;77:528-9.  Back to cited text no. 4
    
5.
Chen W, Zheng J, Hou P, Li L, Hu Y. A case of intraocular thelaziasis with rhegmatogenous retinal detachment. Clin Exp Optom 2010;93:360-2.  Back to cited text no. 5
    
6.
Kim HW, Kim JL, Kho WG, Hwang SY, Yun IH. Intraocular infestation with Thelazia callipaeda. Jpn J Ophthalmol 2010;54:370-2.  Back to cited text no. 6
    



 
 
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