The effect of lateral decubitus position on intraocular pressure in healthy young subjects

. Purpose:  To investigate the effect of change of body posture from supine to lateral decubitus position (LDP) on intraocular pressure (IOP) in healthy young subjects. Methods:  We evaluated 38 eyes of 19 healthy young Korean subjects. IOP was measured using Tonopen XL® in both eyes in the sitting...

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Published in:Acta ophthalmologica (Oxford, England) Vol. 90; no. 1; pp. e68 - e72
Main Authors: Lee, Jong Yeon, Yoo, Chungkwon, Jung, Jae Hoon, Hwang, Young Hoon, Kim, Yong Yeon
Format: Journal Article
Language:English
Published: Oxford, UK Blackwell Publishing Ltd 01.02.2012
Subjects:
Adult
Female
glaucoma
Humans
intraocular pressure
Intraocular Pressure - physiology
lateral decubitus position
Male
Posture - physiology
Prospective Studies
tonometry
Tonometry, Ocular
Tonopen
ISSN:1755-375X, 1755-3768, 1755-3768
Online Access:Get full text
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Summary:. Purpose:  To investigate the effect of change of body posture from supine to lateral decubitus position (LDP) on intraocular pressure (IOP) in healthy young subjects. Methods:  We evaluated 38 eyes of 19 healthy young Korean subjects. IOP was measured using Tonopen XL® in both eyes in the sitting and supine position, 5 and 30 min after right LDP and 5 min after returning to the supine position. A week later, IOP was measured in the same sequence except that the subjects assumed the left LDP. The eye on the lower side in the LDP was termed as a dependent eye. Results:  The mean IOP of the dependent eyes increased significantly at 5 min after changing from supine to right (16.26 ± 2.73 mmHg versus 18.54 ± 2.95 mmHg, p < 0.01) or left LDP (15.53 ± 2.41 mmHg versus 17.53 ± 3.37 mmHg, p < 0.01); this IOP increase in the dependent eyes persisted at 30 min after changing to right (18.47 ± 2.97 mmHg, p < 0.01) or left LDP (17.79 ± 2.20 mmHg, p < 0.01). Upon returning to the supine position, IOP of the dependent eyes decreased significantly (16.83 ± 2.67 mmHg, p < 0.01 for right LDP and 16.47 ± 2.32 mmHg, p < 0.01 for left). However, this effect of the positional change was not found in the non‐dependent eyes (all, p > 0.05). Mean IOP in the dependent eye was significantly higher than that in the non‐dependent eye at 30 min after changing to the right (+0.89 ± 1.52 mmHg) or left LDP (+1.84 ± 2.03 mmHg). Conclusion:  The postural change from supine to LDP significantly increased IOP of the dependent eyes.
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ISSN:1755-375X
1755-3768
1755-3768
DOI:10.1111/j.1755-3768.2011.02208.x