Fish diet is for good vision.

Deficit for unsaturated fatty acids are leading to the damage for cells, brain, heart, as fatty acid mega 3 having in tune and salmon, as care vision against aging progressing for yellow spot degeneration,as leading in adults to the blindness. As and lipid metabolism bad are deficit of omega 3 and high cholesterol, as and result for traditional meal of half saturated and fatty acids or mono unsaturated fats of vegetable origin.
As by medics as two portions of fat fish/day, or mollusc/week are giving a needing dose for fatty acids of class omega 3.
But many of peoples are eating less fish, as ration meal is easy to change, that after a hard eyes disease to cure, as you are loosing vision when, if you have not chance to eat fish,use supplements antioxidants are vitamins C,E, beta carotene, copper, Zn.