Comparison of Intraocular Pressures According to Position Using Icare Rebound Tonometer.
10.3341/jkos.2014.55.7.1049
- Author:
Hae Jin KIM
1
;
Kayoung YI
Author Information
1. Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea. harry92001@naver.com
- Publication Type:Original Article
- Keywords:
Decubitus position;
Icare PRO rebound tonometer;
Supine position
- MeSH:
Healthy Volunteers;
Humans;
Intraocular Pressure*;
Iron-Dextran Complex*;
Supine Position
- From:Journal of the Korean Ophthalmological Society
2014;55(7):1049-1055
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate changes in intraocular pressure (IOP) according to position using a portable rebound tonometer. METHODS: We measured the IOP values of 20 healthy volunteers (40 eyes) in the sitting, supine, right lateral decubitus and left decubitus positions with a portable rebound tonometer, and then analyzed using the Wilcoxon signed rank test. IOP in sitting position was also measured with a non-contact tonometer and a Goldmann applanation tonometer, and analyzed with Kruskal-Wallis test and Spearman correlation analysis. Agreement among the 3 tonometers was calculated using the Bland-Altman method. RESULTS: The IOP measured with rebound tonometer in the supine position was significantly higher than in the sitting position (p = 0.002). However, there was no significant difference in IOP between the supine and decubitus positions. In the decubitus position, there was no significant difference in IOP between the dependent and non-dependent eyes. IOP measurement using the rebound tonometer showed positive correlation with that of the noncontact and Goldmann applanation tonometers. CONCLUSIONS: In normal subjects, IOP measurement obtained with a rebound tonometer in the supine position was significantly higher than in the sitting position, but there was no significant difference in IOP between the supine and decubitus positions. A rebound tonometer may be useful for patients whose intraocular pressure measurement with Goldmann applanation tonometer or non-contact tonometer is impossible. When using a portable rebound tonometer in bed-ridden or pediatric patients, we should pay attention to the interpretation of IOP in the supine position.
