We use our eyes everyday so like anything that is all taxed up by the end of the day, they get tired and dried up. Most of the time we tend to overuse our eyes, stay exposed to the elements, and perhaps, neglect proper eye care that is why they reach their limit. Plus the fact that as you age, you already lose the normal moisture content of your eyes. When this happens, you experience irritation and burning sensation in your eyes. In such instances, do not rub your eyes because this could only result to secondary infection that may take longer to treat.