title: Gonioscopy assisted transluminal trabeculotomy: an ab interno circumferential trabeculotomy for the treatment of primary congenital glaucoma and juvenile open angle glaucoma.
abstract: OBJECTIVE
  To introduce a novel ab interno 360° trabeculotomy for treating primary congenital glaucoma (PCG) and juvenile open angle glaucoma (JOAG) and report preliminary results.
  
  
  METHODS
  A retrospective chart review of patients who underwent a gonioscopy assisted transluminal trabeculotomy (GATT) procedure by four of the authors (DSG, OS, RLF and DGG) between October 2011 and October 2013. The surgery was performed in patients ≤30 years old with a dysgenic anterior segment angle and uncontrolled PCG and JOAG.
  
  
  RESULTS
  Fourteen eyes of 10 patients underwent GATT with follow-up >12 months (12-33 months; mean 20.4). Patients ranged in age from 17 months to 30 years (mean=18.4 years), and five (50%) were female patients. No complications occurred during or following surgery except for early postoperative hyphema in five (36%) of eyes, all cleared by 1 month. The mean intraocular pressure (IOP) decreased from 27.3 to 14.8 mm Hg and the mean number of medications required decreased from 2.6 to 0.86. Five eyes had a drop in IOP ≥15 mm Hg (range 15-39).
  
  
  CONCLUSIONS
  The preliminary results and safety for GATT, a minimally invasive conjunctival sparing circumferential trabeculotomy, are promising and at least equivalent to previous results for ab externo trabeculotomy for the treatment of PCG and JOAG. All eyes in the study were considered a clinical success.
authors: Glaucoma Associates of Texas, Dallas, Texas, USA.
authors: Davinder S
authors: DS
authors: Grover
authors: Glaucoma Associates of Texas, Dallas, Texas, USA.
authors: Oluwatosin
authors: O
authors: Smith
authors: Glaucoma Associates of Texas, Dallas, Texas, USA.
authors: Ronald L
authors: RL
authors: Fellman
authors: Glaucoma Associates of Texas, Dallas, Texas, USA.
authors: David G
authors: DG
authors: Godfrey
authors: Glaucoma Associates of Texas, Dallas, Texas, USA.
authors: Michelle R
authors: MR
authors: Butler
authors: Unidad Oftalmologica Montego c.a, Barquisimeto, Venezuela.
authors: Ildamaris
authors: I
authors: Montes de Oca
authors: University of Miami, Bascom Palmer Eye Institute, Miami, Florida, USA.
authors: William J
authors: http://orcid.org/0000-0002-9442-3076
authors: WJ
authors: Feuer
mesh_terms: D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D005902:Glaucoma, Open-Angle / Q000503:physiopathology / Q000601:surgery*; D006068:Gonioscopy; D006801:Humans; D006871:Hydrophthalmos / Q000503:physiopathology / Q000601:surgery*; D007223:Infant; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D033401:Microscopy, Acoustic; D011182:Postoperative Care; D012189:Retrospective Studies; D025321:Surgery, Computer-Assisted; D014065:Tonometry, Ocular; D014130:Trabeculectomy / Q000379:methods*; D055815:Young Adult
keywords: Angle; Child health (paediatrics); Glaucoma; Intraocular pressure; Treatment Surgery