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TitleIOP variations in the sitting and supine positions
Author(s)Jorge, Jorge
Marques, Rui Ramoa
Lourenço, Adelaide
Silva, Sandra
Nascimento, Sérgio M. C.
Queirós, A.
González-Méijome, José Manuel
KeywordsIntraocular pressure
Pulsair EasyEye
Supine position
Upright position
Non-contact tonometry
Issue date2010
PublisherLippincott, Williams & Wilkins
JournalJournal of Glaucoma
Abstract(s)Purpose: The aim of this study was to assess the influence of the position (upright vs. supine) in the intraocular pressure (IOP) measured with a non-contact portable tonometer. Methods: Fifty university students with a mean age of 22.3±4.2 years (mean±SD) were recruited to participate in this study. IOP was measured with the non-contact tonometer Keeler, Pulsair EasyEye. Measurements in upright and supine positions were randomly obtained. In the upright position, 2 series of 3 measures (UP1 and UP2) and a series of 3 measures in the supine position were performed. Results: The values obtained in the positions UP1 and UP2 were compared, as well as the values of the upright and supine positions. No statistically significant differences were found when comparing the values obtained in the upright position (P>0.05). Instead, when the subjects were in the supine position, IOP increased 2.47±2.12mm Hg (mean±SD), as opposed to the value obtained in the upright position (P<0.001). Conclusions: Results from this study showed that IOP increased when measured in the supine position and that the Pulsair EasyEye tonometer can determine those variations in a healthy young population.
Publisher version
AccessOpen access
Appears in Collections:CDF - OCV - Artigos/Papers (with refereeing)

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