The basis for epidemiological estimates in this report
In the absence of ophthalmological surveys for New Zealand, internationally regarded, large scale epidemiological surveys from Australia were used as the basis for the New Zealand estimates<vii> - adjusted for higher rates of vision loss among the Māori population drawn from the 2006 New Zealand Disability Survey<viii>. Identical disease detection and compliance rates have been assumed across the entire New Zealand population.
<i> Access Economics (2010) Clear Focus - The economic impact of vision loss in New Zealand in 2009. Report by Access Economics Pty Limited for VISION 2020 Australia in support of the VISION 2020 New Zealand Trust.
<ii> Health cost estimates are based on data from Ministry of Health, PHARMAC, Blind Foundation, Statistics New Zealand, Health Research Council, Organization for Economic Cooperation and Development and others. References are available in the full Clear Focus report.
<iii> Cost estimates are based on data from Statistics New Zealand, Ministry of Health, Blind Foundation, Australian Bureau of Transport and Road Economics, Work and Income and others. References are available in the full Clear Focus report.
<iv> La Grow S, Alpass F, Stephen C (2009) 'Economic Standing, Health Status and Social Isolation among Visually Impaired Persons Aged 55 to 70 in New Zealand', J Optom, 2: 155-158.
<v> Centre for Eye Research Australia (CERA) and Access Economics (2004), 'Clear Insight: the economic impact and cost of vision loss in Australia', http://www.cera.org.au/uploads/CERA_clearinsight.pdf, accessed 20 April 2010.
<vi> Wilkinson-Meyers, L; McNeill, R; Inglis, C and Bryan, T (2008) Blind Foundation 2007 Employment Survey. Centre for Health Services Research and Policy, The University of Auckland Faculty of Medical and Health Sciences.
<vii> Estimates were based on the Melbourne Visual Impairment Project and the Blue Mountains Eye Study, using age-specific prevalence rates from Centre for Eye Research Australia (CERA) and Access Economics (2004), Clear Insight: the economic impact and cost of vision loss in Australia, http://www.cera.org.au/uploads/CERA_clearinsight.pdf.
<viii> Office for Disability Issues and Statistics New Zealand (2010) Disability and Māori in New Zealand in 2006: Results from the New Zealand Disability Survey, report for Statistics New Zealand, Wellington.
This page is part of the overview report Clear Focus: The economic impact of vision loss in New Zealand in 2009.