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The effect of body posture changes and central corneal thickness on the intraocular pressure among healthy Malays

Rashidi, Nadiah and Md Mustafa, Md Muziman Syah and Ahmad, Norsham and Megat Basri, Megat Ahmad Fadhil and Mohammad, Nor Ariza and Yusof, Firdaus (2021) The effect of body posture changes and central corneal thickness on the intraocular pressure among healthy Malays. Walailak Journal of Science and Technology, 18 (6). pp. 1-8. E-ISSN 2228-835X

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Abstract

Purpose: To study the relationship between intraocular pressure (IOP), posture, and central corneal thickness (CCT) among healthy Malays. Method: Thirty-four young adults had their IOPs measured using a handheld tonometer (Accutome, Pennsylvania, USA) after maintaining 5 min at four different postures; sitting upright, supine, supine & 45° inclination, and prone positions. The sequences of the postures were made random. CCT was measured using Oculus Pentacam (Oculus, Wetzlar, Germany), and the value at the corneal apex was taken. Participants were grouped into Group A with CCT of < 550 μm, and Group B of > 550 μm. Results: The highest IOP was recorded at the prone position 23.77±2.71 mmHg (p < 0.001), and the lowest was at sitting upright 15.43±2.67 mmHg (p < 0.001). IOP at the supine position was 17.31±3.07 mmHg, and at the supine & 45° inclination position was 16.00±2.80 mmHg. IOPs were significantly different between sitting upright and supine (p = 0.03), between sitting upright and prone (p < 0.001), between supine and prone (p < 0.001), and between supine & inclined 45° and prone (p < 0.001). There was no significant difference in IOPs between Group A and Group B at different postures (p > 0.05). Conclusions: Change in body posture significantly affects IOP, with the lowest IOP during the sitting upright position, and the highest at the prone position. IOP change upon posture shifts was not affected by CCT.

Item Type: Article (Journal)
Additional Information: 4598/80727
Uncontrolled Keywords: Intraocular pressure, postural change, central corneal thickness
Subjects: R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Allied Health Sciences
Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science
Depositing User: Dr. Md Muziman Syah Md Mustafa
Date Deposited: 07 Jun 2020 16:27
Last Modified: 02 Nov 2021 12:50
URI: http://irep.iium.edu.my/id/eprint/80727

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