Journal List > J Korean Ophthalmol Soc > v.52(4) > 1009025

Chung, Choi, Choi, and Kim: Ab Interno Trabeculotomy with Trabectome® for Refractory Primary Open-Angle Glaucoma: A Case Report

Abstract

Purpose

To report a case of ab interno trabeculotomy with Trabectome® (NeoMedix Corp., CA, USA) conducted on a refractory primary open angle glaucoma (POAG) patient.

Case summary

Trabectome® has microelectrocautery with simultaneous infusion and aspiration of debris and ablates a segment of trabecular meshwork and the inner wall of Schlemm’s canal. The patient, a 54-year-old man had uncontrolled intraocular pressure (IOP) with topical anti-glaucoma medications after trabeculectomy and Ahmed valve implantation for POAG. For the patient, ab interno trabeculotomy with Trabectome® was performed. There were no other postoperative complications except for microhyphema immediately after surgery. The IOP was controlled between 14 to 24 mm Hg up to 3 months postoperatively with topical anti-glaucoma medications (Cosopt®, Alphagan-P®, Lumigan®).

Conclusions

Ab interno trabeculotomy with Trabectome® appears to offer a newer method of lowering IOP in POAG than conventional trabeculectomy and glaucoma drainage device surgery.

References

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Figure 1.
Trabectome surgical steps. (A) Create a 1.6-mm clear corneal incision. (B) Inject a small amount of viscoelastic at the incision site. (C) Place Goniolens on the cornea and verify the angle view. (D) Ablate the trabecular meshwork for approximately in counter-clockwise direction. (E) Rotate the tip. (F) Re-insert the tip in the clockwise direction and remove a similar arc. (G) Irrigate and aspirate viscoelastics from the anterior segment. (H) Place one suture across the incision. Arrow: direction of Trabectome® tip.
jkos-52-502f1.tif
Figure 2.
Gonioscopic findings of the patient at 3 months after surgery. Posterior wall of Schlemm’s canal is visible in the area where the trabecular meshwork is removed by Trabectome®. Long arrow, ablation range of the trabecular meshwork; small arrow, white shimmering of the posterior wall of Schlemm’s canal.
jkos-52-502f2.tif
Figure 3.
Follow-up of the patient’s intraocular pressure changes for 3 months postoperatively.
jkos-52-502f3.tif
Figure 4.
Trabectome handpiece design. (A) Irrigation port for a stable anterior chamber. (B) Aspiration port for removal of ablated tissue. (C) Protective footplate for protection from heat injury to adjacent tissue.5
jkos-52-502f4.tif
Figure 5.
Removal of angle tissue barrier reestablishing natural outflow of aqueous humor. (A) Trabecular meshwork. (B) Schlemm’s canal. (C) Electro-surgical pulse ablation. (D) Irrigation 4
jkos-52-502f5.tif
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