title: Unusual Surprises in Glaucoma Filtering Surgeries: Lessons Learned and Review of Literature.
abstract: OBJECTIVE
  To describe an unusual series of complications after glaucoma filtering surgeries with their clinical findings and outcome after tailored non-conventional modes of therapy.
  
  
  METHODS
  Eighteen patients who underwent re-interventions (medical or surgical) after glaucoma filtering surgeries during the period at two tertiary centers, excluding those that required conventional modes of treatment (medical control or re-trabeculectomy, simple wound closure for traumatic wound dehiscence, bleb revision or needling, laser iridotomy), were included. Relevant clinical details with intraoperative videos, intraoperative or postoperative problems, and images with course after re-intervention were retrieved from the hospital database. Clinical details which helped in clinching diagnosis and cause for problems and course after intervention with final vision and intraocular pressure were evaluated.
  
  
  RESULTS
  Six of 18 eyes required surgical management for an unusual course of events after an uneventful filtering surgery. Bleb morphology and close follow-up of the conjunctiva, in addition to intraocular pressure (IOP) and anterior chamber (AC) configuration, helped diagnose possible aetiology and appropriate tailored management. All patients had good IOP and visual outcome in all except one with macular scar status after retinal detachment surgery.
  
  
  CONCLUSIONS
  Assessment of the bleb morphology in the postoperative course coupled with monitoring of the conjunctival wound are essential to conventional monitoring of IOP and anterior chamber configuration to arrive at appropriate management for rare unusual events after glaucoma surgery.
authors.affiliation: a Glaucoma Services, LV Prasad Eye Institute , Bhubaneswar , India.
authors.forename: Aparna
authors.initials: A
authors.lastname: Rao
authors.affiliation: a Glaucoma Services, LV Prasad Eye Institute , Bhubaneswar , India.
authors.forename: Debananda
authors.initials: D
authors.lastname: Padhy
authors.affiliation: a Glaucoma Services, LV Prasad Eye Institute , Bhubaneswar , India.
authors.forename: Avik Kumar
authors.initials: AK
authors.lastname: Roy
authors.affiliation: b Glaucoma Services, LV Prasad Eye Institute , Hyderabad , India.
authors.forename: Sirisha
authors.initials: S
authors.lastname: Senthil
mesh_terms: D018463:Filtering Surgery / Q000009:adverse effects*; D005901:Glaucoma / Q000503:physiopathology / Q000601:surgery*; D014943:Global Health; D006801:Humans; D015994:Incidence; D007429:Intraocular Pressure; D011183:Postoperative Complications / Q000453:epidemiology*
keywords: Bleb; glaucoma surgery complications; malignant glaucoma; trabeculectomy; uveitis