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Lee, Yu, Kim, Lee, and Lee: Seasonal Variations of Acute Angle-Closure Glaucoma in Patients Visiting the Hospital
Original Article
Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(11): 1637-1641.

Published online: 19 November 2012

DOI: https://doi.org/10.3341/jkos.2012.53.11.1637

Seasonal Variations of Acute Angle-Closure Glaucoma in Patients Visiting the Hospital

Tae Yoon Lee, MD, Sung Yu, MD, Jee Hyun Kim, MD, Jong Wook Lee, MD, Kyoo Won Lee, MD, PhD

Cheil Eye Hospital, Daegu, Korea.

Address reprint requests to Kyoo Won Lee, MD, PhD. Cheil Eye Hospital, #1 Ayang-ro, Dong-gu, Daegu 701-820, Korea. Tel: 82-53-959-1751, Fax: 82-53-959-1758, eye7575@korea.com

Received 7 July 2012       Accepted 16 October 2012

Copyright © 2012 The Korean Ophthalmological Society

Abstract

Purpose

The present study investigates the seasonal variations of acute angle-closure glaucoma in patients visiting the hospital.

Methods

Eighty-seven patients (94 eyes) who underwent laser iridotomy were retrospectively analyzed over 5 years. Monthly and seasonal variations were investigated and the difference in seasonal variations according to sex, age, and inhabited area were inspected.

Results

When evaluating monthly variations, acute angle-closure glaucoma occurred mostly in January (13.8%). Incidence of glaucoma was the highest in winter (29.9%), decreased in spring and summer (26.4%) and was lowest in autumn (17.2%). In big cities, the incidence trend was highest in spring (31.8%), lowest in autumn (19.7%) and slightly elevated in winter (27.3%). However, in small cities and rural areas, the incidence was highest in summer (42.9%) and winter (38.1%). There were significant differences between inhabited areas.

Conclusions

Among the patients, seasonal incidence of acute angle-closure glaucoma was the highest in winter and decreased as autumn approached. There were differences of incidence between inhabited areas.

Keywords: Acute angle-closure, Glaucoma, Seasonal variation

Figures and Tables

Figure 1
Monthly variations of acute angle-closure glaucoma for 5 years.
jkos-53-1637-g001
Figure 2
Seasonal variations of acute angle-closure glaucoma for 5 years.
jkos-53-1637-g002
Figure 3
Seasonal variations of acute angle-closure glaucoma in inhabited areas for 5 years (chi-square test for independence, p = 0.04). Distribution within each group is expressed as a percentage.
jkos-53-1637-g003
Table 1
Demographics of patients with acute angle-closure glaucoma
jkos-53-1637-i001

Values are presented as mean ± SD or n (%).

OD = right eye; OS = left eye; OU = both eyes.

Table 2
Presenting symptoms of patients with acute angle-closure glaucoma
jkos-53-1637-i002

Values are presented as n (%).

Table 3
Seasonal variations of acute angle-closure glaucoma by sex*
jkos-53-1637-i003

*Chi-square test for independence, p = 0.42.

Table 4
Seasonal variations of acute angle-closure glaucoma by age*
jkos-53-1637-i004

Values are presented as n (%).

*Linear by linear association test, p = 0.81.

Table 5
Seasonal variations of acute angle-closure glaucoma by inhabited areas*
jkos-53-1637-i005

*Chi-square test for independence, p = 0.04.

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