May 2008
Volume 49, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2008
Effect of Trabeculectomy on Intraocular Pressure Fluctuation With Postural Change in Eyes With Open-Angle Glaucoma
Author Affiliations & Notes
  • H. Takenaka
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • K. Hirooka
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • T. Baba
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • M. Mizote
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • M. Takagishi
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • F. Shiraga
    Ophthalmology, Kagawa University Faculty of Medicine, Miki, Japan
  • Footnotes
    Commercial Relationships  H. Takenaka, None; K. Hirooka, None; T. Baba, None; M. Mizote, None; M. Takagishi, None; F. Shiraga, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2008, Vol.49, 4160. doi:
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      H. Takenaka, K. Hirooka, T. Baba, M. Mizote, M. Takagishi, F. Shiraga; Effect of Trabeculectomy on Intraocular Pressure Fluctuation With Postural Change in Eyes With Open-Angle Glaucoma. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4160.

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

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Abstract

Purpose: : To investigate the effect of trabeculectomy on the intraocular pressure (IOP) fluctuations caused by the postural change in patients with open-angle glaucoma because the progression of visual field damage in open-angle glaucoma may be associated with IOP in the supine position and the magnitude of IOP elevation accompanying postural change.

Methods: : Ten eyes of 10 patients with open-angle glaucoma who underwent trabeculectomy were studied. The IOP at the baseline and after trabeculectomy was measured in both sitting and supine positions. A pneumatonometer was used to measure the IOP in both sitting and supine position.

Results: : The mean IOP in the sitting position was 19.2 ± 4.7 mmHg at the baseline and 9.0 ± 3.2 mmHg after trabeculectomy (P < 0.05, paired t-test). The mean difference in IOP between the sitting and supine position was 3.9 ± 1.5 mmHg at the baseline and 1.9 ± 1.5 mmHg after trabeculectomy (P < 0.05, paired t-test).

Conclusions: : Trabeculectomy might decrease not only the IOP in the sitting position but also the magnitude of IOP elevation associated with the postural change.

Keywords: intraocular pressure 
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