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Cataract surgery in patients with glaucoma drainage implants: the hooked tube technique

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Abstract

Purpose

Cataract surgery has been reported to adversely affect the IOP control in eyes with the glaucoma drainage implant (GDI). One reason might be the flow of lens debris/viscoelastic material through the GDI tube into the bleb. This pilot study was conducted to determine the clinical results of a novel technique for temporary occlusion of the GDI tube with an iris retractor hook during phacoemulsification.

Methods

Retrospective analysis of 15 patients (control group) who underwent phacoemulsification between January 2005 and December 2010 and 17 patients (treatment group) who underwent phacoemulsification with the hooked tube technique between January 2011 and April 2016 with a minimum 1-year follow-up.

Results

The IOP remained within 4 mmHg of the preoperative level in all eyes of the treatment group. Three eyes exhibited IOP spikes (≥ 10 mmHg) among controls. The mean postoperative IOP at 1 month was statistically significantly increased in the control group compared with the treatment group (P = 0.040). The number of antiglaucoma medications at 3 and 6 months was significantly increased in the control group (1.4 ± 1.1 vs. 1.7 ± 1.1; P = 0.041, 1.4 ± 1.1 vs. 2.3 ± 1.2; P = 0.017, respectively). After phacoemulsification, there was a significant increase in the mean number of antiglaucoma medications used at 6 months in the control group compared with the treatment group (P = 0.049). In both groups, one eye developed corneal decompensation.

Conclusions

The hooked tube technique seems to provide an effective way to reduce the risk of the IOP spikes after cataract surgery in eyes with GDI.

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Author information

Authors and Affiliations

  1. Department of Ophthalmology, Päijät-Häme Central Hospital, PHHYKY, Keskussairaalankatu 7, 15850, Lahti, Finland

    Juha Välimäki

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  1. Juha Välimäki
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Corresponding author

Correspondence to Juha Välimäki.

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Conflict of interest

The author declares that he has no conflict of interest.

Ethical Standards

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed Consent

The study was a purely retrospective analysis and did not require informed consent from the participants. All patient data were deidentified and kept confidential. No identifiable patient data were collected.

Electronic supplementary material

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Video 1 A temporary occlusion of the glaucoma drainage implant tube during phacoemulsification cataract surgery: The Hooked Tube Technique (MP4 13552 kb)

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Välimäki, J. Cataract surgery in patients with glaucoma drainage implants: the hooked tube technique. Int Ophthalmol 39, 605–610 (2019). https://doi.org/10.1007/s10792-018-0852-z

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  • DOI: https://doi.org/10.1007/s10792-018-0852-z

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