Dr. Chris Hammond, the chair of ophthalmology at King's College, recommends to increase intake of fruit and vegetables to protect eyes from cataracts:
"We found no beneficial effect from supplements, only from the vitamin C in the diet".
The full text of the study "Genetic and Dietary Factors Influencing the Progression of Nuclear Cataract" - see the second link.
A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques (i.e., a genetically engineered organism). GMOs are used to produce medications and genetically modified foods, and are widely used in scientific research and the production of other goods.
A more specifically defined type of GMO is a "transgenic organism." This is an organism whose genetic makeup has been altered by the addition of genetic material from an unrelated organism. Typically GMOs are organisms whose genetic makeup has been altered without the addition of genetic material from an unrelated organism.