In other research by Dr. Elaine W.T. Chong from the Centre for Eye Research Australia, data from 6,734 individuals age 58 to 69 was analysed for a period between 1990 and 1994, when the participants' nutrient intakes were assessed from a food frequency questionnaire, and they were tracked for the development of AMD between 2003 and 2006.

During the follow-up period, 2,872 cases of early AMD and 88 cases of late AMD developed and the researchers say individuals who consumed higher levels of trans-unsaturated fats - found in baked goods and processed foods - were more likely to have late AMD, whereas those who consumed the most omega-three fatty acids were less likely to have early AMD.

Research has shown that trans-fats increase the risk of coronary heart disease through their effects on cholesterol levels and possibly through inflammation, whereas omega-three fatty acids are believed to protect against damage to the retina, thereby reducing risk for AMD.

The researchers say their findings suggest that people who follow a diet low in trans-fats and rich in omega-three fatty acids and olive oil might enjoy some protection from developing AMD.