Does nutrition play a role in vision improvement besides eye exercises and relaxation? i heard it from this natural vision program. the guy claims that nutrition, eye exercises, and relaxation is the key to improving the vision naturally and when one fails the whole process of improving your vision fails. So is this true? Yes or No pleasee explain

I do believe that nutrition is important because of the effect it has over a person's entire physical well-being. I know for me there are foods which cause me to 'feel fuzzy' in my thinking or which give me physical stress - both of which affect my eyesight. I'm not sure if it's the bad nutrition directly or if it's my habit of holding tension and stress (caused by bad nutrition) in my shoulders, neck, face, and eyes - that is affecting my visual acuity, but I do know that there is a connection.