Vision impairment predicts five-year mortality.
OBJECTIVE
To describe predictors of mortality in the 5-year follow-up of the Melbourne Visual Impairment Project (VIP) cohort.


METHODS
The Melbourne VIP was a population-based study of the distribution and determinants of age-related eye disease in a cluster random sample of Melbourne residents aged 40 years and older. Baseline examinations were conducted between 1992 and 1994. In 1997, 5-year follow-up examinations of the original cohort commenced. Causes of death were obtained from the National Death Index for all reported deaths.


RESULTS
Of the original 3,271 participants, 231 (7.1%) were reported to have died in the intervening 5 years. Of the remaining 3,040 participants eligible to return for follow-up examinations, 2,594 (85% of eligible) did participate, 51 (2%) had moved interstate or overseas, 83 (3%) could not be traced, and 312 (10%) refused to participate. Best corrected visual acuity < 6/12 and cortical cataract were associated with a significantly increased risk of mortality, as were increasing age, male sex, increased duration of cigarette smoking, increased duration of hypertension, and arthritis.


CONCLUSIONS
Even mild visual impairment increases the risk of death more than twofold.
Taylor
H R
HR
Department of Ophthalmology, University of Melbourne, Centre for Eye Research Australia, Victoria, Australia.
McCarty
C A
CA
Nanjan
M B
MB
D000375:Aging / Q000502:physiology; D001315:Australia; D015331:Cohort Studies; D006801:Humans; D011379:Prognosis; D012307:Risk Factors; D013997:Time Factors; D014786:Vision Disorders / Q000401:mortality*