Purpose:To develop a new technique for the placement of a Baerveldt glaucoma implant tube through a long scleral tunnel.Materials and methods:Patients with refractory glaucoma undergoing the maximum tolerated medical therapy were recruited. We created a scleral tunnel with a 24-gauge catheter needle and used the external tube for guidance when introducing a Baerveldt glaucoma implant tube. Main outcome measures included intraocular pressure, supplemental medical therapy score, intraoperative complications, and postoperative complications.Results:Nine eyes of six patients were included in the study. The mean preoperative intraocular pressure (score) was 41.0 mmHg (4.78). Mean postoperative intraocular pressures were 18.3 mmHg (0.22), 18.8 mmHg (0.13), and 16.9 mmHg (0.50) at postoperative 1, 3, and 6 months, respectively. Minor vitreous hemorrhages were observed in three cases. Postoperative hypotony (<5 mmHg) was observed only in the first case at postoperative day 3. In one case, a stent suture could not be placed because the patient was restive intraoperatively, which resulted in an expulsive hemorrhage at 3 months postoperatively. The tube could have penetrated into the anterior chamber in another case. Tube exposure and corneal erosions were not observed in all cases.Conclusion:We developed a new technique to place a Baerveldt glaucoma implant tube through a long scleral tunnel. The outcomes were comparable to other reports of Baerveldt glaucoma implant surgery, although the number of cases was limited in this study. A long scleral tunnel can substitute for a preserved scleral patch and self-scleral flap to avoid tube-related complications.
European Journal of Ophthalmology – SAGE
Published: May 1, 2018
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