May 2005
Volume 46, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2005
Intraocular Pressure Variability in Sitting and Supine Position and After Water Drinking Test in Primary Open Angle Glaucoma
Author Affiliations & Notes
  • M. Hatanaka
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • L. Sakata
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • R. Garcia
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • L. Trancoso
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • M. Treveza
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • R.M. Vessani
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • R. Susanna
    Glaucoma, University of Sao Paulo, Sao Paulo, Brazil
  • Footnotes
    Commercial Relationships  M. Hatanaka, None; L. Sakata, None; R. Garcia, None; L. Trancoso, None; M. Treveza, None; R.M. Vessani, None; R. Susanna, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 4828. doi:
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      M. Hatanaka, L. Sakata, R. Garcia, L. Trancoso, M. Treveza, R.M. Vessani, R. Susanna; Intraocular Pressure Variability in Sitting and Supine Position and After Water Drinking Test in Primary Open Angle Glaucoma . Invest. Ophthalmol. Vis. Sci. 2005;46(13):4828.

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

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Abstract

Abstract: : Purpose: To evaluate the intra–ocular pressure (IOP) variability by moving the body from sitting to supine position and by water drinking test (WDT) in primary open angle glaucoma (POAG) and normal subjects. Methods: Cross sectional observational analysis of 31 eyes of 31 POAG and 14 eyes of 14 normal subjects. All POAG subjects were under clinical therapy to reduce IOP. Patients were submitted to a modified diurnal tensional curve (mDTC) followed by Perkins tonometry at the sitting and supine position, and then a WDT was performed in each patient. Results: TThe mean mDTC IOP in normal and POAG subjects was 15.49 ± 3.53 mmHg and 15.56 ± 3.25 mmHg respectively (p = 0.95). When the subjects moved to the supine position, IOP increased 1.36 ± 1.34 mmHg and 2.84 ± 2.21 mmHg respectively (p=0.02). After WDT, IOP fluctuation was 2.71±0.99 mmHg in the normal group versus 4.13±2.33 mmHg in POAG patients (p=0.007). Mean IOP increase after water ingestion was higher in comparison to IOP increase after moving from sitting to supine position (p=0.02). Conclusions: POAG eyes demonstrated a significant IOP increase when assumed the supine position and after WDT. The IOP variability detected by the WDT was significantly higher than the IOP increase after moving the body from sitting to supine position.

Keywords: intraocular pressure 
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