title: Migration of intraocular silicone oil into the subconjunctival space and orbit through an Ahmed glaucoma valve.
abstract: OBJECTIVE
  To report a patient with intraocular silicone oil migration into the subconjunctival space and orbit through an Ahmed glaucoma valve implant.
  
  
  METHODS
  Observational case report. A 29-year-old female with diabetes mellitus and proliferative diabetic retinopathy underwent three left eye pars plana vitrectomies and ultimately intraocular silicone oil placement for tractional retinal detachment. Subsequently, she developed neovascular glaucoma and underwent an inferotemporal Ahmed glaucoma tube implant, left eye.
  
  
  RESULTS
  Intraocular silicone oil migrated through the Ahmed glaucoma valve into the subconjunctival space and orbit. Left eye evisceration with silicone oil removal was performed for a blind painful left eye and improvement of appearance.
  
  
  CONCLUSIONS
  Silicone oil migration through an Ahmed valve may be observed after retinal detachment repair with intraocular silicone oil. An Ahmed valve may be contraindicated in eyes of patients with intraocular silicone oil.
authors.affiliation: Doheny Eye Institute, Keck School of Medicine, University of Southern California, 1450 San Pablo Street, Los Angeles, CA 90033, USA.
authors.forename: P P
authors.initials: PP
authors.lastname: Nazemi
authors.forename: L P
authors.initials: LP
authors.lastname: Chong
authors.forename: R
authors.initials: R
authors.lastname: Varma
authors.forename: M A
authors.initials: MA
authors.lastname: Burnstine
mesh_terms: D000328:Adult; D003229:Conjunctival Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D000075202:Contraindications; D003922:Diabetes Mellitus, Type 1 / Q000150:complications; D003930:Diabetic Retinopathy / Q000150:complications / Q000601:surgery; D017234:Eye Evisceration; D005129:Eye Foreign Bodies / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D005260:Female; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D020327:Glaucoma Drainage Implants / Q000009:adverse effects*; D015355:Glaucoma, Neovascular / Q000601:surgery; D006801:Humans; D009916:Orbital Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D012163:Retinal Detachment / Q000209:etiology / Q000601:surgery; D012189:Retrospective Studies; D012827:Silicone Oils; D014057:Tomography, X-Ray Computed; D014821:Vitrectomy
chemical_list: D012827:Silicone Oils