The second Global Burden of Disease (GBD) study commenced in 2007 in order to obtain comparable estimates on the burden of disease, injuries and risk factors for 1990 and 2005, with results due to be released in 2012. This course coincided with the publication of the primary outputs of the GBD. It explored the purpose of the GBD and the methods used in its exhaustive systematic review of all prevalence studies of visual impairment and blindness since 1980. The original GBD developed the concept of Disability Adjusted Life Years (DALYs). Improvements in the calculation of disability weights for visual impairment and blindness incorporated in this latest iteration of the GBD were also described and discussed, as the results of the analysis of the visual impairment data. Methods of dissemination of these important findings to commissioners and providers of eye care globally were also explored.
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