Short sightedness or near sightedness is a refractive error in human eyes. In technical terms it is also known as Myopia. Person experiencing with this problem find it difficult to view distant objects as they appear blurred or foggy. It is yet to be fully discovered the true cause of this problem but focusing on near objects like Books, Mobile, Computer etc for too long often cause short sightedness. Young people are the most affected by this problem.
Do not let your children stick in front of Computer or Books all the time. Encourage them to have some outdoor activities also. This may prevent the symptoms of Myopia or Short Sightedness.