Visual field loss and falls among older adults with glaucoma
Black, Alexander A., Wood, Joanne M., Lovie-Kitchin, Jan E., & Newman, Beth M. (2008) Visual field loss and falls among older adults with glaucoma. In Association for Research in Vision and Ophthalmology (ARVO) 2008 Annual Meeting, 27 April - 1 May 2008, Fort Lauderdale, Florida.
Purpose: To examine the visual factors associated with falling among older adults with glaucoma.-----
Methods: 65 community-dwelling older adults with open-angle glaucoma, aged 75 + or- 6 years (from 65 to 90 years), participated in this study. an eye examination was performed, including tests of binocular visual acuity (high contrast), binocular sensitivity (Pelli-Robson), visual fields (monocular Humphrey Field Analyser SITA 24-2 and binocular 96-point visual field) and nerve fibre layer thickness with the Stratus Optical Coherence Tomographer. Visual field loss was graded according to the Advanced Glaucoma intervention Study (AGIS) criteria. Dta were also collected on demographic characteristics (age and gender) and physical performance measures (self-reported physical activity and six-minute walk test). The main outcome measure was he number of falls reported in the previous 12 months. the relationship between the vision measures and number of falls was evaluated using negative binomial regression and incidence rate ratios (IRR) adjusted for potential confounding factors (age, gender and physical performance measures).-----
Results: In the previous 12 months, 23 (35%) participants experienced at least one fall: 16 (25%) participants fell only once and seven (11%) participants fell two or more times (up to six falls). After adjusting for the potential confounding factors, the negative binomial models showed that the rate of falls doubled for every 9dB reduction in the better-eye 24-2 mean deviation (IRR 1.08), 8 point increase in the better-eye AGIS score (IRR 1.09), or 35 points missed on the binocular 96-point visual field (IRR 1.02). Visual acuity, contrast sensitivity and retinal nerve fibre thickness were not associated with falling.
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|Item Type:||Conference Paper|
|Additional Information:||This paper was published in the journal, Investigative Ophthalmology & Visual Science, vol.49 no.5.|
|Keywords:||Quality of life, Visual fields, Ageing|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Current > Schools > School of Public Health & Social Work
|Deposited On:||13 May 2009 00:50|
|Last Modified:||14 Oct 2011 05:46|
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