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The impact of first- and second-eye cataract surgery on injurious falls that require hospitalisation: a
Lynn B Meuleners1, Michelle Louise Fraser, Jonathan Ng
1School of Public Health, Curtin-Monash Accident Research Centre, Curtin University, Perth, Western Australia, Australia.
Background:
cataract is a leading cause of reversible vision impairment and may increase falls in older adults.
Objective:
to assess the risk of an injury due to a fall among adults aged 60+, 2 years before first-eye cataract surgery, between first-eye surgery and second-eye surgery and 2 years after second-eye surgery.
Design:
a retrospective cohort study.
Setting:
Western Australian Hospital Morbidity Data System and the Western Australian Death Registry.
Subjects:
there were 28,396 individuals aged 60+ years who underwent bilateral cataract surgery in Western Australia between 2001 and 2008.
Methods:
Poisson regression analysis based on generalised estimating equations compared the frequency of falls 2 years before first-eye cataract surgery, between first- and second-eye surgery and 2 years after second-eye cataract surgery after accounting for potential confounders.
Results:
the risk of an injurious fall that required hospitalisation doubled (risk ratio: 2.14, 95% confidence interval: 1.82 to 2.51) between first- and second-eye cataract surgery compared with the 2 years before first-eye surgery. There was a 34% increase in the number of injurious falls that required hospitalisation in the 2 years after second-eye cataract surgery compared with the 2 years before first-eye surgery (risk ratio: 1.34, 95% confidence interval: 1.16-1.55).
Conclusions:
there was an increased risk of injurious falls after first- and second-eye cataract surgery which has implications for the timely provision of second-eye surgery as well as appropriate refractive management between surgeries.
