CIENCIASMEDICASNEWS: Demographic and Geographic Features of Exfoliation Glaucoma in 2 United States-Based Prospective Cohorts

lunes, 2 de enero de 2012

Demographic and Geographic Features of Exfoliation Glaucoma in 2 United States-Based Prospective Cohorts

Presented in part at: Association for Research in Vision and Ophthalmology Annual Meeting, March 2010, Fort Lauderdale, Florida.

Received 1 March 2011; received in revised form 13 June 2011; accepted 15 June 2011. published online 10 October 2011.

Available online: October 7, 2011.

Purpose

To examine prospectively the association between demographic and geographic factors in relation to exfoliation glaucoma (EG) or exfoliation glaucoma suspect (EGS).

Design

Prospective cohort study.

Participants

Seventy-eight thousand nine hundred fifty-five women in the Nurses' Health Study and 41 191 men in the Health Professionals Follow-up Study.

Methods

Female and male health professionals were followed prospectively from 1980 through 2008 and from 1986 through 2008, respectively. Eligible participants were 40 years of age or older, did not have EG or EGS at baseline, and reported undergoing eye examinations during follow-up. Information regarding demographic features, lifetime geographic residence, and potential confounders was collected. During follow-up, 348 EG or EGS cases were confirmed with medical record review. The relative risk of EG or EGS in each cohort was estimated separately and the results were pooled with meta-analysis.

Main Outcome Measures

Multivariate rate ratios (MVRRs) of EG or EGS and their 95% confidence intervals (CIs).

Results

Exfoliation glaucoma or EGS was strongly age related with subjects 75 years of age or older at 46.22-fold (95% CI, 22.77–93.80) increased risk compared with those between 40 and 55 years of age. Although men were 68% less likely to develop EG or EGS than women (MVRR, 0.32; 95% CI, 0.23–0.46), no predisposition to EG or EGS by ancestry, particularly Scandinavian ancestry, emerged. Compared with a lifetime of living in the northern tier of the continental United States, lifetime residence in the middle geographic tier (MVRR, 0.53; 95% CI, 0.40–0.71) and in the southern geographic tier (MVRR, 0.25; 95% CI, 0.09–0.71) was associated with markedly reduced risks of EG or EGS.

Conclusions

In this mainly white cohort from the United States, increasing age and female gender were significant risk factors for EG or EGS; however, Scandinavian heritage was not. Living in the middle or southern regions of the United States relative to living in the northern region was associated with a reduced risk of EG or EGS.