Weak eyesight  is a common problem that we have to face today. Even young children at tender age have to use eye glasses due to various vision conditions. Weakness in some part of the brain may be a reason of eye deterioration, but the major causes of weak eyesight include watching TV or working in front of a computer for a long period without break, reading in inappropriate distance or lighting, digestive disorder, unbalanced nutrition, lack of vitamins and poor diet. For some people stress and excessive use of alcohol can also create eyesight problems