Effect of seasons upon intraocular pressure in healthy population of China.
- Author:
Imran Ahmad QURESHI
1
;
Xiao Rong XI
;
Hui Juan LU
;
Xiang Dong WU
;
Yang Bin HUANG
;
Ekhtiar SHIARKAR
Author Information
- Publication Type:Original Article
- Keywords: applanation pressure; environmental factors; healthy subjects; seasons; tonometry
- MeSH: Adult; Analysis of Variance; Blood Pressure; China; Humans; Intraocular Pressure/*physiology; Male; Reference Values; *Seasons; Tonometry, Ocular
- From:Korean Journal of Ophthalmology 1996;10(1):29-33
- CountryRepublic of Korea
- Language:English
- Abstract: Studies have been shown that intraocular pressure (IOP) shows a seasonal variation, but amount of change differs from study to study. The variability in their results may be due to negligence of factors that can affect IOP. Due to differences in environmental conditions of China than other countries, we investigated seasonal variations in IOP of 103 healthy male Chinese of Shanghai. IOP was measured each month over the course of fourteen months with the Goldmann applanation tonometer. The average intraocular pressures in the winter months were higher than those in the spring, summer, and autumn months. The IOP difference between winter and summer months was found to be 1.4 +/- 0.7 mmHg.This study confirms that season influences IOP. As compared to other nations, effect of seasons on IOP seems to be somewhat less pronounced in Chinese. The possible mechanisms, responsible for the seasonal variation of intraocular pressure, are also postulated.
