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New manual trabeculotome may improve outcomes for ab interno trabeculotomy
BOSTON — A new single-handed trabeculotome, the Trab 360, can manually cut up to 360° of meshwork through a single corneal incision, a speaker here said.
“The entire trabecular meshwork is removed from the eye; nothing is left behind. There’s often some microscopic bleeding associated with this, which may remain there for a week or so,” John A. Hovanesian, MD, FACS, told attendees during Glaucoma Day preceding the American Society of Cataract and Refractive Surgery annual meeting. “The instrument has been used as a standalone and combined with phacoemulsification in both pseudophakic and phakic eyes to treat not only primary open-angle glaucoma, but also other forms such as pigmentary glaucoma and pseudoexfoliative glaucoma.”
John A. Hovanesian
The Trab 360 (Sight Sciences) can be used in clear corneal trabeculotomy, does not require a power unit and can be disposed of after use, he said, which makes it particularly useful when used in manual ab interno trabeculotomy.
“This is a technique that seems to be effective for meaningfully lowering intraocular pressure, avoiding complications with blebs, avoids hypotony, and because it’s ab interno, it’s easy to find the canal and allows us to combine it nicely with cataract surgery,” he said.
Trab 360 is listed with the U.S. Food and Drug Administration but is not indicated for the treatment of glaucoma, nor is it a MIGS device, Hovanesian noted.
Disclosure: Hovanesian is a consultant for Sight Sciences.