Next to age and heredity, smokers are at most risk, as studies suggest that diet and lifestyle is important in reducing the risk of macular degeneration and in slowing down its progression.
New Zealand actress Dame Kate Harcourt is one well-known New Zealander who has been affected by the disease.
"I have macular degeneration - it's actually a very common condition," she says. "That's why it's so important to me that we raise awareness of it, so we can educate people and help to save their sight."
Broadcaster Philip Sherry has also seen the effects first-hand: "Macular degeneration was the bane of my mother's life, so I will do everything I can to raise awareness of this disease."
There are two types of MD: "wet" (sudden) and "dry" (progressive). While there are effective treatments for wet MD, early detection is vital, as some people still experience a significant loss of vision, and for people with dry MD, there is no treatment. There is no "cure" for either type, but diet and lifestyle may modify risks.
The emotional, social and economic impact of quality of life from visual impairment can be severe, so as much awareness as possible is needed to change the statistics in New Zealand.
Support and information is at www.seeourvision.org.nz