Citation

Wood J, Lacherez PF, Black A, Cole M, Boon M, Kerr G. Invest. Ophthalmol. Vis. Sci. 2011; 52(8): 5088-5092.

Affiliation

School of Optometry, Queensland University of Technology, Brisbane, QLD.

Copyright

(Copyright © 2011, Association for Research in Vision and Ophthalmology)

DOI

10.1167/iovs.10-6644

PMID

21474773

Abstract

Purpose Age-related macular degeneration (AMD) is the leading cause of irreversible visual impairment among older adults. This study explored the relationship between AMD, falls risk and other injuries and identified visual risk factors for these adverse events. Methods Participants included 76 community-dwelling individuals with a range of severity of AMD (mean age, 77.0±6.9 years). Baseline assessment included binocular visual acuity, contrast sensitivity and merged visual fields. Participants completed monthly falls and injury diaries for one year following the baseline assessment. Results Overall, 74% of participants reported having either a fall or a non-fall related injury. Fifty-four percent of participants reported a fall and 30% reported more than one fall; of the 102 falls reported, 63% resulted in an injury. Most occurred outdoors (52%), between late morning and late afternoon (61%) and when navigating on level ground (62%). The most common non-fall related injuries were lacerations (36%) and collisions with an object (35%). Reduced contrast sensitivity and visual acuity were associated with increased falls rate, after controlling for age, gender, cognitive function, cataract severity and self-reported physical function. Reduced contrast sensitivity was the only significant predictor of non-fall related injuries. Conclusion Among older adults with AMD, increased visual impairment was significantly associated with an increased incidence of falls and other injuries. Reduced contrast sensitivity was significantly associated with both increased rates of falls and other injuries, while reduced visual acuity was only associated with increased fall rate. These findings have important implications for the assessment of visually impaired older adults.

Language: en