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Effect of phacoemulsification on trabeculectomy function
Author(s) -
Nguyen Dan Q,
Niyadurupola Nuwan,
Tapp Robyn J,
O'Connell Rachael A,
Coote Michael A,
Crowston Jonathan G
Publication year - 2014
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/ceo.12254
Subject(s) - trabeculectomy , medicine , phacoemulsification , intraocular pressure , trab , ophthalmology , glaucoma , bleb (medicine) , surgery , visual acuity , disease , graves' disease
Background To evaluate the effect of phacoemulsification on trabeculectomy function. Design Retrospective case–control study. Participants Forty‐eight patients who underwent trabeculectomy surgery and had at least 2 years of follow up. Methods Patients were classified into two groups: patients who had phacoemulsification subsequent to trabeculectomy ( T rab_phaco, n = 18) and patients who were pseudophakic for greater than 6 months preceding their trabeculectomy ( P haco_trab, n = 30). Groups were matched for length of follow up of 2 years from time of trabeculectomy. Main Outcome Measures The primary outcome measures were target intraocular pressure of criteria A , ≤12 mm H g; B , ≤15 mm H g; C , ≤18 mm H g with or without additional topical treatment. A separate measure for bleb function failure was also used; with failure defined as the need for additional topical antiglaucoma therapy or surgical intervention to achieve control of intraocular pressure. Results There was no significant difference in achieving each intraocular pressure criterion between groups (12 months, P = 1.0; 24 months, P = 0.330). In the first 12 months, significantly more trabeculectomies in the T rab_phaco group failed, requiring additional intervention to control the IOP (39%) compared with the P haco_trab (10%) group ( P = 0.028). Although this trend continued at 24 months, there were no significant differences in failure rates ( P = 0.522). Conclusions Phacoemulsification performed after trabeculectomy significantly increased rates of bleb failure in the following 12 months but not at 24 months.