July 2008

 

CATARACT/ IOL

 

Australian study yields similar findings as U.S. Beaver Dam Eye Study


 

 

A study in the May issue of Ophthalmology, reported similar findings of age- and gender-specific cataract incidences in an older Australian population as the U.S. Beaver Dam Eye Study.

“In this study, 72% of the participants were affected by cataract or had had cataract surgery over the 10-year follow-up period,” Gowri L. Kanthan MBBS, MOphthSc, University of Sydney Department of Ophthalmology, Center for Vision Research, Westmead Millennium Institute, Westmead Hospital, Sydney, Australia and colleagues wrote.

The prospective population-based study included participants who were at least 49 years old. According to the study, 10-year person-specific incidences were 36.0% for nuclear cataract, 28.0% for cortical cataract, 9.1% for PSC, and 17.8% for cataract surgery. The corresponding rates in men were 31.7%, 24.4%, 8.2%, and 14.4%, respectively, and in women were 39.3%, 30.8%, 9.8%, and 20.1%, respectively, the authors wrote.

There was a positive association with age in the incidence for each type of cataract and cataract surgery. There was a higher significance of incidence in women than men for nuclear cataract, cortical cataract, any cataract, and cataract surgery after adjusting for age. No significant gender difference was found for PSC. The mean age at cataract surgery was 75.8 years, and there was no significant gender difference. Among those who developed any cataract, 22% had more than one type and 1.3% had all 3 types present. There was a significant association between nuclear cataract and PSC with visual impairment (visual acuity worse than 20/40), the researchers wrote.

Reported by: EyeWorld News Service

Australian study yields similar findings as U.S. Beaver Dam Eye Study Australian study yields similar findings as U.S. Beaver Dam Eye Study
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