J Korean Ophthalmol Soc.  2012 Nov;53(11):1637-1641.

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

• Lee TY
• Yu S
• Kim JH
• Lee JW
• Lee KW

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.

Keyword

Acute angle-closure; Glaucoma; Seasonal variation

MeSH Terms

Glaucoma
Glaucoma, Angle-Closure
Humans
Incidence
Retrospective Studies
Seasons

Figure

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  Figure 1 Monthly variations of acute angle-closure glaucoma for 5 years.

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  Figure 2 Seasonal variations of acute angle-closure glaucoma for 5 years.

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  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.

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