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Related Experiment Video

Updated: May 12, 2026

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments

Published on: April 24, 2020

Sleeping posture and intraocular pressure.

Melissa Hsing Yi Wong¹, Annie Hiu On Lai, Mandeep Singh

¹Department of Ophthalmology, National University Health System, 5 Lower Kent Ridge Road, Singapore. ophchewp@nus.edu.sg

Singapore Medical Journal

|April 3, 2013

Summary

Sleeping on your side, the lateral decubitus position, significantly increases intraocular pressure (IOP) in healthy individuals compared to lying flat. This finding is consistent across different pillow types, highlighting positional effects on eye pressure.

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Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Published on: June 20, 2015

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Last Updated: May 12, 2026

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments

Translaminar Autonomous System Model for the Modulation of Intraocular and Intracranial Pressure in Human Donor Posterior Segments

Published on: April 24, 2020

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye

Published on: June 20, 2015

Area of Science:

Ophthalmology
Physiology

Background:

The lateral decubitus position is a common sleep posture.
The effect of this position on intraocular pressure (IOP) in healthy individuals is not well-established.

Purpose of the Study:

To investigate the impact of the lateral decubitus position on intraocular pressure (IOP) in healthy volunteers.

Main Methods:

Prospective observational case series involving healthy participants without glaucoma.
Intraocular pressure (IOP) measured using Tono-Pen® XL in supine and left lateral decubitus positions with soft and hard pillows.
Paired Student's t-test used for statistical analysis.

Main Results:

Intraocular pressure (IOP) was significantly higher in the lateral decubitus position compared to the supine position (p < 0.001) for both soft and hard pillows.
No significant difference in IOP was observed between soft and hard pillows within the same position.

Conclusions:

The lateral decubitus position, frequently adopted during sleep, is associated with elevated intraocular pressure (IOP) in healthy individuals.