June 2017
Volume 58, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2017
Magnetic Resonance Imaging in Eyes with Baerveldt Glaucoma Implants
Author Affiliations & Notes
  • Kentaro Iwasaki
    Department of Ophthalmology, University of Fukui, Yoshida, Fukui, Japan
  • Masayuki Kanamoto
    Radiological Center, University of Fukui Hospital, Fukui, Japan
  • Yuji Takihara
    Department of Ophthalmology, University of Fukui, Yoshida, Fukui, Japan
  • Shogo Arimura
    Department of Ophthalmology, University of Fukui, Yoshida, Fukui, Japan
  • Yoshihiro Takamura
    Department of Ophthalmology, University of Fukui, Yoshida, Fukui, Japan
  • Hirohiko Kimura
    Department of Radiology, University of Fukui, Fukui, Japan
  • Masaru Inatani
    Department of Ophthalmology, University of Fukui, Yoshida, Fukui, Japan
  • Footnotes
    Commercial Relationships   Kentaro Iwasaki, Abbott Medical Optics (F); Masayuki Kanamoto, Abbott Medical Optics (F); Yuji Takihara, Abbott Medical Optics (F); Shogo Arimura, Abbott Medical Optics (F); Yoshihiro Takamura, Abbott Medical Optics (F); Hirohiko Kimura, Abbott Medical Optics (F); Masaru Inatani, Abbott Medical Optics (F)
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2017, Vol.58, 4957. doi:
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    • Get Citation

      Kentaro Iwasaki, Masayuki Kanamoto, Yuji Takihara, Shogo Arimura, Yoshihiro Takamura, Hirohiko Kimura, Masaru Inatani; Magnetic Resonance Imaging in Eyes with Baerveldt Glaucoma Implants. Invest. Ophthalmol. Vis. Sci. 2017;58(8):4957.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To evaluate and quantify the filtering bleb after the Baerveldt glaucoma implantation using magnetic resonance imaging (MRI).

Methods : This cross-sectional case series study included 62 patients who underwent Baerveldt glaucoma implants. High resolution orbital images were obtained using 3-Tesla MRI with phased-array head coil in six months or later after surgery. Three dimensional images were constructed, and the filtering bleb volume was measured. The relationship between bleb images and postoperative intraocular pressure (IOP) were compared.

Results : In total, 52 quantifiable MR images were obtained in this study. The mean periods which obtained MRI after surgery was 15.2 months. This study found that bleb structures in eyes with Baerveldt glaucoma implants were classified into the single bleb-layer (n=28) and the double bleb-layer (n=24). Each bleb had 4 holes, which correspond to the pillars of subconjunctival tissue through the holes in the endplate. The postoperative IOP was significantly lower in double bleb-layer eyes than single bleb-layer eyes (12.3 mmHg vs 14.7 mmHg, P = 0.033). The mean bleb volume was 0.23 cm3 (n=52). Although there was no significant correlation between the bleb volume and the postoperative IOP (r = -0.080, P = 0.57), the bleb volume was significantly larger in double bleb-layer eyes than single bleb-layer eyes (0.28 cm3 vs 0.19 cm3, P = 0.024).

Conclusions : The MR images in this study revealed that bleb structures in eyes with Baerveldt glaucoma implants were classified into the single bleb-layer and the double bleb-layer. Our data indicate that the formation of the double bleb-layer contributes to lower IOP levels rather than the bleb volume.

This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.

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