Overuse and misuse of the eye muscles cause weak eyesight. Weakness or heat of brain is considered to be the main cause of weak eyesight. Some of the common causes responsible for weak eyesight are; watching T.V. closely and for longer durations, unbalanced living and eating habits, reading continuously in a powerful light, digestive disorder and deficiency of vitamin A. Alcohol abuse and excessive worry can also produce weakness of the eyes. Home Remedies There are several home remedies for weak eyesight which are easy to follow and simple to use. Some of the common home remedies are: 1. One  →