There are many reasons for eating a healthy diet, with lots of fruit an vegetables, here is yet an other reason. A 19-year-old man has lost his sight and hearing after eating junk food since he was seven. He's been a fuzzy eater, and lived on a diet of chips, white bread, processed snacks and meat. He has been diagnosed with nutritional optic neuropathy, and is now considered being legally blind. Teenager loses sight as eating disorder leads to malnutrition