This study aimed to project population-based prevalence data associated wit
h visual impairment, in order to estimate the number of affected older Aust
ralians (aged 50 or older) in the years 2000 and 2030. We used data from th
e Blue Mountains Eye Study (BMES) and Melbourne Visual Impairment Project (
MVIP), together with Australian Bureau of Statistics population projections
. Similar definitions for moderate (6 / 24-6 / 60 visual acuity) and severe
(< 6 / 60 visual acuity) visual impairment were used. Combining age-standa
rdized data, we estimated that in the year 2000, 38 820 (0.73%) and 25 590
(0.48%) Australians aged 50 years or older will have moderate and severe vi
sual impairment, respectively. By 2030, these rates will have more than dou
bled, to an estimated 85 910 (0.92%) and 57 930 (0.62%) Australians with mo
derate and severe visual impairment, respectively. Women aged 50 years or o
lder will have a 1.8-fold and four-fold risk, respectively, of moderate and
severe visual impairment compared to men. Visual impairment will affect an
increasing proportion of older Australians. Newer approaches to therapy, r
ehabilitation and community support for persons with visual impairment will
be needed to meet this challenge.