http://articles.mercola.com/sites/articles/archive/2001/02/17/blindness-fish.aspxEating fish , especially tuna fish, may protect against age-related macular degeneration (AMD) , which is a currently untreatable disease that causes fuzziness, shadows or other distortions in the center of vision. Over several years, investigators questionedenCommunityServer 2008.5 SP1 (Build: 31106.3070)