Night blind? Carrots may not help

Night blind? Carrots may not help

At the 3,500-square-foot 150-seat Fremont Street unit, pasta products account for 80 percent of food sales. Even so, Zisman said, the most consistently popular menu item is the fresh fish of the day.

Rats fed a growth-stunting diet (having only a third to a fifthof their normal protein intake) along with four times the daily requirement for vitamin A suffered night blindness, despite maintaining sufficient levels of vitamin A in the eye. Rats fed a fully balanced diet, but with only enough calories to maintain the size and weight of animals on the protein-deficient diet, suffered even worse night vision--again while maintaining normal eye levels of vitamin A. Bankson says this suggests that a lack of protein and/or energy can also cause night blindness.