Surgically induced corneal refractive change following glaucoma surgery

Eğrilmez, Sait; Ateş, Halil; Nalçacı, Serhad; Andaç, Kutay; Yağcı, Ayşe

doi:10.1016/j.jcrs.2003.11.055

Cited by 70 publications

(78 citation statements)

References 18 publications

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“…76 Most studies have noted these corneal changes to be transient 74,77,78 but significant change can persist up to six months following surgery. 75,76 Trabeculectomy for glaucoma can cause significant corneal change, which is typically a steepening in the vertical meridian, leading to an increase in regular WTR [79][80][81] and irregular astigmatism. 82 The size of the incision appears to be correlated to the amount of induced astigmatism with smaller incisions (as used in 'microtrabeculectomy' procedures) leading to a smaller astigmatic change.…”

Section: Astigmatism Resulting From Ocular Surgerymentioning

confidence: 99%

A review of astigmatism and its possible genesis

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Collins

Carney

2007

Clinical and Experimental Optometry

233

205

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Astigmatism is a refractive condition encountered commonly in clinical practice. This review presents an overview of research that has been carried out examining various aspects of this refractive error. We examine the components of astigmatism and the research into the prevalence and natural course of astigmatic refractive errors throughout life. The prevalence of astigmatism in various ethnic groups and diseases and syndromes is also discussed. We highlight the extensive investigations that have been conducted into the possible aetiology of astigmatism, however, no single model or theory of the development of astigmatism has been proven conclusively. Theories of the development of astigmatism based on genetics, extraocular muscle tension, visual feedback and eyelid pressure are considered. Observations and evidence from the literature supporting and contradicting these hypotheses are presented. Recent advances in technology such as wavefront sensors and videokeratoscopes have led to an increased understanding of ocular astigmatism and with continued improvements in technology, our knowledge of astigmatism and its genesis should continue to grow.

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Section: Astigmatism Resulting From Ocular Surgerymentioning

confidence: 99%

A review of astigmatism and its possible genesis

Read

Collins

Carney

2007

Clinical and Experimental Optometry

233

205

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“…A total of 24 articles were excluded, including 9 full reports [16,17,18,19,20,21,22,23,24], and 15 meeting abstracts (see Appendix 1). Out of them, 17 randomized controlled trials were included in the present meta-analysis, 14 published in full form [25,26,27,28,29,30,31,32,33,34,35,36,37,38] and 3 published in abstract form (see Appendix 2).…”

Section: Resultsmentioning

confidence: 99%

Efficacy and Tolerability of Nonpenetrating Filtering Surgery in the Treatment of Open-Angle Glaucoma: A Meta-Analysis

Cheng

Wei

et al. 2009

Ophthalmologica

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Aims:To evaluate the efficacy and tolerability of nonpenetrating filtering surgery in the treatment of patients with open-angle glaucoma. Methods: Pertinent studies were selected by extensive searches. A total of 17 randomized controlled trials were included in the present meta-analysis. The main outcome measures were risk differences (RDs) of complete success for efficacy and postoperative complications for tolerability. Pooled estimates were computed according to a random-effects model. Results:Viscocanalostomy and deep sclerectomy were significantly less effective than tra- beculectomy, and pooled RDs of complete success were –0.16 (95% confidence interval, CI, –0.30 to –0.02) and –0.10 (–0.19 to 0.00). Deep sclerectomy plus mitomycin C (MMC) was also less effective than trabeculectomy plus MMC, with pooled RD of complete success being –0.16 (95% CI –0.32 to –0.01). Viscocanalostomy and deep sclerectomy caused main complications in fewer patients than trabeculectomy. Conclusions:Viscocanalostomy and deep sclerectomy were less effective than trabeculectomy in the treatment of open-angle glaucoma, and deep sclerectomy plus MMC was also less effective than trabeculectomy plus MMC. However, viscocanalostomy and deep sclerectomy were associated with fewer complications than trabeculectomy.

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“…[8][9][10][11][12][13] The use of intraoperative MMC during deep sclerectomy significantly reduced the postoperative IOP and increased the success rate of the procedure and the probability of achieving lower target IOPs. 12,[14][15][16] However, to the best of our knowledge, no other study has reported data about deep sclerectomy augmented with MMC in eyes with a previously failed trabeculectomy.…”

Section: Discussionmentioning

confidence: 99%

“…[3][4][5][6][7] As an initial surgery, deep sclerectomy may offer success rates comparable to trabeculectomy and minimize the risk of postoperative complications. [8][9][10][11][12][13] Recently, the adjunctive use of MMC in deep sclerectomy has been reported to be safe and to improve the surgical results. 12,[14][15][16] Although studies have been performed on the efficacy of trabeculectomy with MMC in eyes that underwent previous filtering procedures, [4][5][6][7] to the best of our knowledge, no study has been published on the success rate and safety of deep sclerectomy augmented with MMC in these eyes.…”

Section: Introductionmentioning

confidence: 99%

Deep sclerectomy with mitomycin C in failed trabeculectomy

Rebolleda

Muñoz-Negrete

2005

Eye

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Aim To evaluate the success rate and complications associated with deep sclerectomy with mitomycin C (MMC) and a reticulated hyaluronic acid implant in previously failed trabeculectomy. Methods This prospective study included 20 eyes with a previously failed trabeculectomy, which were treated with deep sclerectomy with 0.2 mg/ml MMC application under the conjunctiva and superficial scleral flap. Intraocular pressure (IOP), glaucoma medications, visual acuity, and complications were recorded preoperatively and 1 day, 1 week, and 1, 3, 6, and 12 months postoperatively. Results The mean preoperative IOP was 25.877.3 mmHg; the IOP significantly decreased to 14.673.2 mmHg 1 year postoperative. At each interval, the mean IOP was significantly lower than preoperatively (P ¼ 0.000). At 1 year, the complete success rate (IOPr21 mmHg untreated) was 65% and the qualified success rate (IOPr21 mmHg with and without medication) was 100%. 12 patients (60%) achieved an IOPr15 mmHg with and without medication. No shallow or flat anterior chamber, endophthalmitis, or leakage developed. Conclusions These data suggest that deep sclerectomy augmented with MMC is a safe surgical procedure that decreases IOP in eyes with a previously failed trabeculectomy.

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Surgically induced corneal refractive change following glaucoma surgery

Abstract: Despite larger flap size and surgical area, nonpenetrating trabecular surgeries induced less astigmatism than trabeculectomy.

Cited by 70 publications

References 18 publications

A review of astigmatism and its possible genesis

A review of astigmatism and its possible genesis

Efficacy and Tolerability of Nonpenetrating Filtering Surgery in the Treatment of Open-Angle Glaucoma: A Meta-Analysis

Deep sclerectomy with mitomycin C in failed trabeculectomy

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