According to a report published in April in the New England Journal of Medicine, a punch to the head left one man in Austria with a real star in his eye. Balls, punches, and even airbags can produce shockwaves through the eye that are strong enough to damage the lens and create a cataract. The cataract that emerged in the 55-year-eye old's was only unusual because of the detailed star shape, according to doctors. "Nature has made a beautiful cataract," said Dr. Mark Fromer, an ophthalmologist at Lenox Hill Hospital in New York. Usually, such cataracts appear as a white-yellow cloud, not a star. In these types of cases, cataract surgery can restore a person's vision.