2023
DOI: 10.3390/medicina59020381
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The Effect of the Water Drinking Test on Ocular Parameters and Choroidal Thickness in Glaucoma Suspects

Abstract: Background and objectives: We aimed to evaluate the effects of the water drinking test (WDT) on several systemic and ocular parameters, including choroidal thickness, which was assessed through optical coherence tomography angiography (OCTA), in glaucoma suspects. Materials and Methods: A total of 40 eyes from 20 glaucoma suspects without any systemic or ocular diseases were included in this prospective observational study. All the participants undertook the WDT, which required the drinking of 1 L of table wat… Show more

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(2 citation statements)
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“…The similar IOP rise seen during the WDT between open-angle and closedangle patients suggests the ICA size does not play a significant role [51]. Choroidal expansion has been consistently observed following water drinking [11][12][13][14][15][16][17], however a swept-source OCT study did not show an association between IOP rise and choroidal thickness [17] which may implicate a combination of mechanisms behind the observed effect. No other major structural changes in pupil size or central corneal thickness were observed, with changes in corneal hysteresis not observed in previous work [52].…”
Section: Discussionmentioning
confidence: 94%
See 1 more Smart Citation
“…The similar IOP rise seen during the WDT between open-angle and closedangle patients suggests the ICA size does not play a significant role [51]. Choroidal expansion has been consistently observed following water drinking [11][12][13][14][15][16][17], however a swept-source OCT study did not show an association between IOP rise and choroidal thickness [17] which may implicate a combination of mechanisms behind the observed effect. No other major structural changes in pupil size or central corneal thickness were observed, with changes in corneal hysteresis not observed in previous work [52].…”
Section: Discussionmentioning
confidence: 94%
“…The mechanism of IOP increase during the WDT in certain individuals remains uncertain, with several hypotheses presented. Choroidal expansion during the WDT has been observed in multiple studies in both glaucomatous [ 11 13 ] and non-glaucomatous [ 14 17 ] eyes. Reduction in aqueous outflow due to increased episcleral venous pressure [ 18 ] has also been considered.…”
Section: Introductionmentioning
confidence: 99%