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. 2023 Feb 1;32(2):e11-e14.
doi: 10.1097/IJG.0000000000002080. Epub 2022 Jul 20.

A Novel Tube Insertion Technique for Glaucoma Drainage Device Implantation

Abhijit A Mohite  1   2 , Mei-Ling Cheng  1   3 , Velota C T Sung  1
Affiliations

A Novel Tube Insertion Technique for Glaucoma Drainage Device Implantation

Abhijit A Mohite et al. J Glaucoma. .

Abstract

Purpose: Early hypotony after non-valved glaucoma drainage device (GDD) implantation for complex glaucomatous eyes with labile aqueous production can lead to significant visual morbidity. We therefore sought to report the early postoperative outcomes of a novel surgical technique that allows atraumatic insertion of non-valved GDDs through a much smaller 25-gauge scleral track, to minimize entry site leakage and improve safety.

Methods: Retrospective case series of 15 consecutive cases undergoing non-valved GDD insertion into the anterior chamber using a previously unreported technique.

Results: All eyes underwent successful GDD insertion using our novel technique, with no intraoperative complications. The mean preoperative intraocular pressures (IOP), at day 1, week 1 and week 3 were 31.4, 22.4, 23.7, and 25.6 mm Hg, respectively. A statistically significant IOP reduction was achieved at day 1, week 1 and week 3 postoperatively ( P <0.05) without any observed leakage at the scleral entry site. One eye (6.7%) with complex panuveitic glaucoma developed early hypotony (5 mm Hg) with shallow choroidal detachments on day 1. This was successfully managed with 1 intracameral ophthalmic viscoelastic device injection given at the slit-lamp and no further intervention.

Conclusions: This novel single needle-docking intraocular insertion manoeuvre is an easily adoptable technique to make GDD insertion through a smaller 25-gauge water-tight scleral track more efficient and less traumatic. The technique reduces scleral distortion and therefore improves surgical safety particularly in eyes with complex secondary glaucoma.

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Conflict of interest statement

Disclosure: The authors declare no conflict of interest.

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