title: Diplopia and periorbital mass associated with Miragel buckling explant.
abstract: A 28-year-old female presented with a palpable mass lesion on the superonasal aspect of her right globe and she had a progressive diplopia. She had a scleral encircling surgery with a Miragel explant (MIRA, Waltham, Mass, USA) for the tractional retinal detachment associated with pars planitis 9 years previously. On examination, she revealed restricted eye movements of her right eye. The magnetic resonance imaging documented a swelling of the Miragel explant that mimicked a periorbital mass lesion. The Miragel explant was removed and fragmentation of the explant was found intraoperatively. The removed Miragel explant was examined by a scanning electron microscopy, and this demonstrated a disintergrated and swollen structural composition of the Miragel explant. Postoperatively, her extraocular movement was almost restored and the retina remained well attached. Alterations in the structural composition of the Miragel explant results in an excessive swelling that causes a restriction of the extraocular movement, and this can mimick a periorbital mass lesion.
authors.affiliation: The Institute of Vision Research and Department of Ophthalmology, College of Medicine, Yonsei University, Seoul, Korea.
authors.forename: Eun Jee
authors.initials: EJ
authors.lastname: Chung
authors.forename: Hyun Sub
authors.initials: HS
authors.lastname: Oh
authors.forename: Sung Chul
authors.initials: SC
authors.lastname: Lee
authors.forename: Oh Woong
authors.initials: OW
authors.lastname: Kwon
mesh_terms: D000328:Adult; D004172:Diplopia / Q000209:etiology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D016727:Orbital Pseudotumor / Q000209:etiology*; D011102:Polyhydroxyethyl Methacrylate / Q000009:adverse effects* / Q000031:analogs & derivatives*; D012163:Retinal Detachment / Q000601:surgery; D012591:Scleral Buckling / Q000009:adverse effects*; D014794:Visual Fields
chemical_list: C065274:Miragel; D011102:Polyhydroxyethyl Methacrylate