A condition in which a person is not able to see the distant objects clearly is called short sightedness. The technical term used for this problem is myopia. The person affected with myopia has no problem in seeing the objects nearby but when he looks at the far off objects, the visibility is not clear.
There are various causes which may result in short sightedness. These include improper supply of blood to the eye, stress, eye strain, weakness of eye muscles and nerves, a prolonged reading in dim or dazzling light, habit of reading while traveling etc. Blurred and improper vision is the basic symptom of short sightedness. The eye of the patient starts secreting water if he looks at the distant object for a long time. Apart from this the other symptoms of the disease may include mild and persistent headache, heaviness in eyes, itching in eyes etc.
In people of old age group, the main factor responsible for the problem of short sightedness is weakness of eye muscles and therefore a treatment for making the muscles of the eye strong may help avoiding the problem. The weakness of muscles may be the result of taking unhealthy food or a sedentary life style. Deficiency of vitamins and minerals in the body can also lead to the problem of muscle weakness which eventually leads to the problem of myopia.
Vitamin A is very helpful in keeping eyes healthy and therefore a regular consumption of vitamin A is necessary for avoiding eye problems including short sightedness. The major sources of vitamin A are milk, tomatoes, green peas, spinach, carrot, soya bean, lettuce etc. You are advised to increase the intake of vitamin A in your daily diet if you are experiencing a problem of short sightedness. Taking endive on regular basis is very helpful in avoiding eye problems. It is also a good source of vitamin A.