Dataset Information

Human Ocular Thelaziasis: A Case Report from Indonesia.

ABSTRACT: Thelaziasis is a parasitic disease caused by a nematode of genus Thelazia, which is rare in the world, including Indonesia. The definitive hosts for Thelazia are canids, felids, mustelids, and other mammals, while the vector is drosophila flies. Consequently, this study reported an uncommon occurrence of human ocular thelaziasis in Indonesia. Based on the patient's complaints and physical examination, we found a living worm that move actively in the anterior chamber; then documentation is carried out both during the examination at the polyclinic and in the operating room. The surgery was performed using topical anaesthesia, clear corneal incision, and removing worm through the main port. Morphological examination from the parasitology laboratory showed that the worm was Thelazia callipaeda species. Following this intervention, the patient was given an oral anti-helminthics drug, topical and oral antibiotics, topical steroid, and surgical treatment. There was no recurrence or appearance of any other symptoms reported in 2 months of follow-up.

SUBMITTER: Harlimton LMK

PROVIDER: S-EPMC9247524 | biostudies-literature | 2022 May-Aug

REPOSITORIES: biostudies-literature

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Human Ocular Thelaziasis: A Case Report from Indonesia.

Harlimton Liem Meysie Kristi LMK Wahyuni Sitti S Reza Alif A Sirajuddin Junaedi J Eka Hasnah B HB Islam Itzar Chaidir IC Ichsan Andi Muhammad AM

Case reports in ophthalmology 20220501 2

Thelaziasis is a parasitic disease caused by a nematode of genus <i>Thelazia</i>, which is rare in the world, including Indonesia. The definitive hosts for <i>Thelazia</i> are canids, felids, mustelids, and other mammals, while the vector is drosophila flies. Consequently, this study reported an uncommon occurrence of human ocular thelaziasis in Indonesia. Based on the patient's complaints and physical examination, we found a living worm that move actively in the anterior chamber; then documenta ...[more]

PMID: 35950017

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Project description:BackgroundOcular neuromyotonia (ONM) is characterized by episodic diplopia, which is usually triggered by prolonged eccentric gaze of the affected extraocular muscles. The spell is characterized by involuntary, occasionally painful, sustained contraction of one or more extraocular muscles innervated by the oculomotor, trochlear, or abducens nerve. ONM usually occurs as a late consequence of radiotherapy around the parasellar area, although idiopathic cases have been reported. Most cases are unilateral; however, bilateral ONM has occasionally been described.Case presentationA 60-year-old woman presented with a 4-month history of episodic, painful, horizontal binocular diplopia. She underwent external beam radiotherapy to the skull base for treatment of nasopharyngeal carcinoma. The tumor was well controlled. General neurological examination findings were unremarkable. Neuro-ophthalmic examination revealed normal visual acuity, visual fields, pupils, and fundi. Ocular alignment showed orthotropia with normal ocular motility. Myasthenic eyelid signs were absent. However, she developed episodes of involuntary sustained contraction of the medial rectus muscle following prolonged eccentric gaze toward the affected medial rectus muscle, which resulted in esotropia upon returning to the primary position. The esotropic episodes spontaneously resolved after approximately 2 min. These spells affected both medial rectus muscles. Both pupils remained normal throughout the examination. Magnetic resonance imaging revealed neither brain parenchyma/brain stem lesions nor tumor recurrence. Her symptoms were successfully treated with carbamazepine.ConclusionsEpisodic esotropia in the adducting eye following prolonged horizontal eccentric gaze is a significant characteristic of ONM affecting the bilateral medial rectus muscles (i.e., bilateral oculomotor ONM). In spite of its extreme rarity, ONM should be considered as a differential diagnosis of episodic diplopia, especially in patients with a history of radiotherapy around the parasellar area. Careful examination with prolonged eccentric gaze should be performed to achieve a correct diagnosis and avoid an extensive unnecessary workup.

Dataset Information

Human Ocular Thelaziasis: A Case Report from Indonesia.

Publications

Human Ocular Thelaziasis: A Case Report from Indonesia.

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