Journal List > J Korean Ophthalmol Soc > v.59(9) > 1101024

J Korean Ophthalmol Soc. 2018 Sep;59(9):867-870. Korean.
Published online September 17, 2018.
©2018 The Korean Ophthalmological Society
A Case of Twice Recurring Ocular Thelaziasis from Thelazia callipaeda
Bon Hyeok Gu, MD and Dong Eun Oh, MD
Department of Ophthalmology, Veterans Health Service Medical Center, Seoul, Korea.

Address reprint requests to Dong Eun Oh, MD. Department of Ophthalmology, Veterans Health Service Medical Center, #53 Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul 05368, Korea. Tel: 82-2-2225-1379, Fax: 82-2-2225-1485, Email:
Received April 12, 2018; Revised June 06, 2018; Accepted August 28, 2018.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.



We report a case of recurrent ocular thelaziasis by Thelazia callipaeda.

Case summary

A 71-year-old male visited the ophthalmic clinic, complaining of itching, a foreign body sensation, and irritation in the right eye. He was previously diagnosed with Thelazia callipaeda infection, 3 months prior, at another hospital. A parasite, shaped like a thin small thread, was found in the conjunctival sac of his right eye, with active movement. The parasite was identified as Thelazia callipaeda by pathology. Four months after removal of the parasite, symptoms relapsed in the same eye. Two parasites were rediscovered and removed. Since then, no additional specific sign related to the parasite has been noted in follow- up examinations.


Due to frequent recurrence of infections caused by the short life cycle of the parasite, monthly follow-up examinations are required for at least 1 year after discovery of the parasite.

Keywords: Parasite; Recurrence; Thelazia callipaeda; Thelaziasis


Figure 1
Slit-lamp microscopic view. A Thelazia callipaeda in conjunctival sac.
Click for larger image

Figure 2
Photographs of the collected Thelazia callipaeda from patient's eye (microscopic appearance). (A) Gross appearance of Thelazia callipaeda. Hematoxylin and eosin (H&E) stain (×10). (B) The helminth contains numerous microfilaria within the uterus (arrow), H&E (×200).
Click for larger image


This study was presented as a poster at the 115th Annual Meeting of the Korean Ophthalmological Society 2016.

Conflicts of Interest:The authors have no conflicts to disclose.

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