April 2011
Volume 52, Issue 14
Free
ARVO Annual Meeting Abstract  |   April 2011
Comparison of Water Drinking Tests Performed with 1000 and 650 ml of Water
Author Affiliations & Notes
  • Jayme A. Vianna
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Diego N. Rocha
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Alexandre S. Reis
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Luciana M. Alencar
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Marcelo Hatanaka
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Remo Susanna, Jr.
    Department of Ophthalmology, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
  • Footnotes
    Commercial Relationships  Jayme A. Vianna, None; Diego N. Rocha, None; Alexandre S. Reis, None; Luciana M. Alencar, None; Marcelo Hatanaka, None; Remo Susanna, Jr., None
  • Footnotes
    Support  FAPESP support 2010/12592-1
Investigative Ophthalmology & Visual Science April 2011, Vol.52, 665. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Jayme A. Vianna, Diego N. Rocha, Alexandre S. Reis, Luciana M. Alencar, Marcelo Hatanaka, Remo Susanna, Jr.; Comparison of Water Drinking Tests Performed with 1000 and 650 ml of Water. Invest. Ophthalmol. Vis. Sci. 2011;52(14):665.

      Download citation file:


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

      ×
  • Supplements
Abstract 
 
Purpose:
 

To compare the intraocular pressure (IOP) profiles and discomfortduring the water drinking test (WDT) performed with 1000mL and650ml of water.

 
Methods:
 

This prospective and observational study included 25 patients(mean age 67.1 years, 64% female) with primary open-angle glaucomaunder treatment. All patients underwent the WDT twice, firstwith 650ml and two weeks later with 1000ml, always at 10am.IOP was measured at baseline and patients were then instructedto drink the water in 10 minutes. IOP measurements were obtainedthree times, at 15-minute intervals. At the end of the study,each patient rated the discomfort related to water intake ona scale (0 to 10). Peak IOP agreement was analyzed with Bland-Altmanplot, and discomfort scores were compared using Wilcoxon SignedRanks test.

 
Results:
 

Peak IOP with 1000ml occurred at 15 min. for 72% patients andwith 650ml at 30 min for 56% patients. Bland-Altman plot revealeda fixed bias of 0.6 for higher peak IOP in 1000ml test (95%limits of agreement -4.7 to 6.0). 56% patients had a differencein peak IOP on both tests smaller than 2mmHg. Discomfort scoreswere smaller in 650ml test (0.68 vs 3.52, P<0.001).

 
Conclusions:
 

WDT with 1000ml and 650ml have moderate agreement in peak IOP.Patients found 650ml WDT more comfortable.  

 

 
Keywords: intraocular pressure • stress response 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×