Macular Degeneration (MD) is the leading cause of blindness in Australia. The Macular Degeneration Foundation reports that MD affects 1 in 7 Australians over the age of 50 , with the incidence increasing with age.
MD is responsible for 48% of severe vision loss in Australia. http://www.mdfoundation.com.au/resources/1/Facts%20&%20Figures.pdf
A major factor in reducing risk is stopping smoking.
The video “Macular Degeneration: Prevention and Treatment” http://www.youtube.com/watch?v=Vh0dAAejh3Y discusses risk factors and the range of possible treatments.