title: Glaucoma Drainage Device Erosion Following Ptosis Surgery.
abstract: OBJECTIVE
  To highlight the potential risk of glaucoma drainage device erosion following ptosis surgery.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 71-year-old man underwent uncomplicated superotemporal Ahmed glaucoma valve implantation in the left eye in 2008. Approximately 8 years later, the patient underwent bilateral ptosis repair, which successfully raised the upper eyelid position. Three months postoperatively, the patient's glaucoma drainage implant tube eroded through the corneal graft tissue and overlying conjunctiva to become exposed. A graft revision surgery was successfully performed with no further complications.
  
  
  CONCLUSIONS
  Caution and conservative lid elevation may be warranted when performing ptosis repair in patients with a glaucoma drainage implant, and patients with a glaucoma implant undergoing ptosis surgery should be followed closely for signs of tube erosion.
authors.affiliation: *School of Medicine †Department of Ophthalmology, Queen's University ‡Department of Ophthalmology, Hotel Dieu Hospital §Kingston General Hospital, Kingston ∥Institute for Clinical Evaluative Sciences, Kingston, ON, Canada.
authors.forename: Steven S
authors.initials: SS
authors.lastname: Bae
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Campbell
mesh_terms: D000368:Aged; D019882:Blepharoplasty / Q000009:adverse effects*; D001763:Blepharoptosis / Q000150:complications / Q000601:surgery*; D005901:Glaucoma / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D020327:Glaucoma Drainage Implants / Q000009:adverse effects*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D008297:Male; D011475:Prosthesis Failure