Acute closed angle glaucoma and sunshine.

Abstract

Study objective-The aim was to examine a possible association of amount of sunshine and risk for acute closed angle glaucoma.Design-This was a retrospective analysis of hospital discharge registry data, linked to meteorological data for the same period.Setting-The study was a national survey using hospital discharge data for the whole of Finland over a 10 year period.Participants-All subjects with the acute closed angle glaucoma diagnosis from the hospital discharge registry were collected for the years 1972 to 1982. A total of 1796 patients were found.Measurements and main resultsMeteorological data from two cities in Finland, Helsinki and Oulu, were collected for the same years from the Finnish Meteorological Institute. A peak incidence of acute closed angle glaucoma was noted whenever the number of hours without sunshine increased. A regression analysis including incidence of acute closed angle glaucoma as a dependent variable, and sex, mean temperature, mean air pressure, mean humidity, total amount of rain per month, and mean sunshine hours as independent variables, was constructed. Sex and sunshine hours best explained the variation in incidence in a covariate model. No other meteorological variate could improve the model fit.Conclusions-The result confirms that the number of hours without sunshine is positively associated with the incidence of acute closed angle glaucoma, when other meteorological variables are controlled for.

The genetic mechanisms of primary angle closure glaucoma

“…119 Conversely, a Finnish study assessing the association between sun exposure and risk for acute ACG suggested that the number of hours without sunshine is positively associated with the incidence of acute closed angle glaucoma, when other meteorological variables are controlled for. 120 Acute attacks were also reported to occur more frequently in the same population group in winter and autumn than summer or spring. 120 A common factor among all these studies and environmental effects is thought to be that during adverse weather conditions people tend to stay indoors.…”

“…120 Acute attacks were also reported to occur more frequently in the same population group in winter and autumn than summer or spring. 120 A common factor among all these studies and environmental effects is thought to be that during adverse weather conditions people tend to stay indoors. This may increase the likelihood of a mydriaticinduced acute ACG attack due to pupillary dilation and a subsequent spike in IOP.…”

Diurnal Variation of Optical Coherence Tomography Measurements of Static and Dynamic Anterior Segment Parameters

“…8 AAC most commonly occurs during the early evening hours and its incidence is also correlated with the number of hours without sunshine. 9,10 While it is tempting to hypothesize that diurnal variation of static parameters plays a role in the pathogenesis of angle closure disease, such variation has never been clearly demonstrated in healthy or diseased eyes.…”

The Seasonality of Acute Attack of Primary Angle-Closure Glaucoma in Beijing, China

“…Teikari et al . reported that the incidence of acute attack of PACG was higher in winter and autumn compared with spring and summer 21 . However, in Taiwan, hospital admission rates of PACG were significantly higher in March and with increased relative humidity 5 .…”

“…Meteorological conditions have previously been reported to be associated with the attack of PACG, and early significant results were only considered to be associated with shortened duration of sunshine. In Finland, an increase in the incidence of acute angle closure glaucoma was noted whenever the number of hours without sunshine increased 21 . Teikari et al .…”