title: Intraocular pressure 3 to 4 hours and 20 hours after cataract surgery with and without ab interno trabeculectomy.
abstract: OBJECTIVE
  To evaluate intraocular pressure (IOP) immediately after cataract surgery with or without ab interno trabeculectomy (Trabectome) and whether trabeculectomy-related hyphema increases the risk for IOP spikes.
  
  
  METHODS
  Private glaucoma practice.
  
  
  METHODS
  Retrospective interventional nonrandomized comparative chart review.
  
  
  METHODS
  Intraocular pressure was measured 3 to 4 hours and 20 hours postoperatively.
  
  
  RESULTS
  The combined group comprised 73 eyes of 73 patients and the cataract-only group, 75 eyes of 75 patients. The mean preoperative IOP was 15.8 mm Hg ± 3.6 (SD) and 14.9 ± 3.0 mm Hg, respectively (P = .09). In the combined group, the IOP decrease was significant at 3 to 4 hours (P = .0003) and 20 hours (P = .0007). In the cataract-only group, the IOP increased significantly (P < .0001 and P = .0035, respectively). The mean IOP was significantly lower in the combined group than in the cataract-only group at 3 to 4 hours (12.8 ± 5.9 mm Hg versus 19.7 ± 7.5 mm Hg) and 20 hours (12.7 ± 7.0 mm Hg versus 17.2 ± 5.9 mm Hg) (both P < .0001). Significantly fewer eyes in the combined group than in the cataract-only group had IOP spikes (overall, P = .0077; 3 to 4 hours, P = .001). Hyphema occurred in 35 eyes (47.9%) in the combined group; however, the IOP was similar with or without hyphema. Only 1 eye with an IOP spike in the combined group had hyphema.
  
  
  CONCLUSIONS
  Combining ab interno trabeculectomy and cataract surgery reduced short-term postoperative IOP and the incidence of IOP spikes despite the common hyphema.
  
  
  BACKGROUND
  No author has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From the Oakland University William Beaumont School of Medicine (Y. Weiner), Rochester Hills, Michigan, Hudson Valley Community College (Severson), Troy, New York, and Ophthalmic Consultants of the Capital Region (Severson, A. Weiner), Albany, New York, USA.
authors.forename: Yotam
authors.initials: Y
authors.lastname: Weiner
authors.affiliation: From the Oakland University William Beaumont School of Medicine (Y. Weiner), Rochester Hills, Michigan, Hudson Valley Community College (Severson), Troy, New York, and Ophthalmic Consultants of the Capital Region (Severson, A. Weiner), Albany, New York, USA.
authors.forename: Melissa L
authors.initials: ML
authors.lastname: Severson
authors.affiliation: From the Oakland University William Beaumont School of Medicine (Y. Weiner), Rochester Hills, Michigan, Hudson Valley Community College (Severson), Troy, New York, and Ophthalmic Consultants of the Capital Region (Severson, A. Weiner), Albany, New York, USA. Electronic address: aweiner7@gmail.com.
authors.forename: Asher
authors.initials: A
authors.lastname: Weiner
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003922:Diabetes Mellitus, Type 1 / Q000150:complications; D003924:Diabetes Mellitus, Type 2 / Q000150:complications; D005260:Female; D005901:Glaucoma / Q000145:classification / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011184:Postoperative Period; D012189:Retrospective Studies; D013997:Time Factors; D014065:Tonometry, Ocular; D014130:Trabeculectomy