title: Effect of trabecular aspiration on intraocular pressure in pigment dispersion syndrome and pigmentary glaucoma.
abstract: OBJECTIVE
  Recently, we described a new form of nonfiltering glaucoma surgery-trabecular aspiration-designed to increase trabecular outflow in pseudoexfoliation glaucoma. This study was carried out to investigate whether trabecular aspiration is equally safe and effective in the treatment of pigment dispersion syndrome (PDS) and pigmentary glaucoma (PG).
  
  
  METHODS
  Prospective, nonrandomized comparative trial with historical control.
  
  
  METHODS
  Twenty eyes of 20 patients with medically uncontrolled intraocular pressure (IOP) caused by PDS or PG were treated by trabecular aspiration.
  
  
  METHODS
  Trabecular pigment particles were cleared with a pressure of 100 to 200 mmHg using a specially designed aspiration probe.
  
  
  METHODS
  The IOP and number of medications before and after surgery were measured. Intraoperative and postoperative complications were analyzed. Surgical success was defined as IOP < or = 21 mmHg with no more than one topical medication. Results were compared with those previously reported with similar treatment of pseudoexfoliative glaucoma.
  
  
  RESULTS
  Mean pretreatment IOP averaged 27.0 (standard deviation [SD], 3.3) mmHg and was significantly reduced to 23.7 (SD, 3.9) mmHg at last follow-up (20.1 +/- 8.6 months). However, the cumulative life-table success rates were only 42% and 15% at 3 and 12 months, respectively. Considering both groups separately, the success rates in the PDS group were 63% and 18% at 3 and 12 months compared with a success rate of 12% in the PG group as early as 1 month after surgery.
  
  
  CONCLUSIONS
  Eyes with PDS responded better to trabecular aspiration than do those with PG, indicating that PDS and PG are two successive stages of the same disease process. Altogether, trabecular aspiration failed to achieve long-term pressure control in either of the two groups.
authors.affiliation: University of Cologne, Department of Ophthalmology, Germany.
authors.forename: P C
authors.initials: PC
authors.lastname: Jacobi
authors.forename: T S
authors.initials: TS
authors.lastname: Dietlein
authors.forename: G K
authors.initials: GK
authors.lastname: Krieglstein
mesh_terms: D000328:Adult; D004322:Drainage / Q000379:methods*; D017889:Exfoliation Syndrome / Q000601:surgery*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000601:surgery*; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012449:Safety; D014129:Trabecular Meshwork / Q000601:surgery*; D016896:Treatment Outcome