Abstract
Gonioscopy Assisted Transluminal Trabeculotomy (GATT) is a novel technique that allows for the performance of circumferential trabeculotomy via an ab-interno approach. The procedure offers several distinct advantages to traditional glaucoma filtering procedures in the treatment of adult and developmental glaucomas. Importantly, the procedure is performed via clear corneal incisions and therefore spares conjunctival tissue. Important preoperative considerations include the degree of corneal clarity, intraocular lens stability, and gonioscopic view of the anterior chamber angle. The procedure may be performed with either a suture or an illuminated microcatheter. Postoperatively, patients are treated with topical steroidal, nonsteroidal, and antibiotic eyedrops. Intraocular pressure (IOP)-lowering eyedrops may also be used as necessary. In a recent study reporting on results achieved with the GATT procedure, 57 patients with POAG achieved an IOP reduction of 7.7 mmHg [(SD, 6.2 mmHg) or 30.0 % (SD, 22.7 %)] with an average decrease in glaucoma medications of 0.9 (SD, 1.3) at 6 months. The GATT procedure is a minimally invasive, conjunctival sparing surgical technique that improves upon conventional ab externo trabeculotomy in adults and children. Success rates are at least equivalent to previously published studies of ab externo circumferential trabeculotomy.
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Drs. Davinder Grover and Ronald Fellman declare that they have no conflict of interest.
No human or animal studies were carried out by the authors for this article.
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Grover, D.S., Fellman, R.L. (2015). Gonioscopy Assisted Transluminal Trabeculotomy (GATT) for the Treatment of Adult and Developmental Glaucomas. In: Aref, A., Varma, R. (eds) Advanced Glaucoma Surgery. Essentials in Ophthalmology. Springer, Cham. https://doi.org/10.1007/978-3-319-18060-1_5
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DOI: https://doi.org/10.1007/978-3-319-18060-1_5
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