Extraocular Muscle Palsy in Patients with Chronic Orbital Myositis

(2020) Extraocular Muscle Palsy in Patients with Chronic Orbital Myositis. J Binocul Vis Ocul Motil. pp. 177-181. ISSN 2576-117x

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Abstract

BACKGROUND: Orbital myositis (OM) is a subgroup of idiopathic orbital inflammation. It can involve single or multiple extraocular muscles and result in restriction or paresis of extraocular muscles. METHOD: We reported two unusual cases of extraocular muscle paresis in the fibrotic stage of chronic OM and reviewed the literature related to this finding. RESULTS: The first case was of a 38-year-old woman with chronic OM with large-angle right eye exotropia and right medial rectus paresis. She received a botulinum A toxin injection into the right lateral rectus muscle as a first treatment, but it was unsuccessful in correcting her deviation. Subsequently, she underwent two strabismus surgeries, which successfully resolved her diplopia in primary gaze. The second case was of a 35-year-old woman with chronic OM and left lateral rectus palsy, which was managed with a botulinum A toxin injection. CONCLUSION: OM can cause extraocular muscle palsy in the chronic fibrotic stage of the disease.

Item Type: Article
Keywords: Chronic orbital myositis extraocular muscle palsy idiopathic orbital inflammation
Subjects: WW Ophthalmology
Divisions: Faculty of Medicine > Departments of Clinical Sciences > Department of Eye
Page Range: pp. 177-181
Journal or Publication Title: J Binocul Vis Ocul Motil
Journal Index: Pubmed
Volume: 70
Number: 4
Identification Number: https://doi.org/10.1080/2576117x.2020.1830671
ISSN: 2576-117x
Depositing User: Zahra Otroj
URI: http://eprints.mui.ac.ir/id/eprint/12082

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