Science

Light

Care of Eyes

It Is necessary that you take proper care of your eyes. If there is any problem you should go to an eye specialist. Have a regular checkup. If advised, use suitable spectacles. Too little or too much light is bad for eyes. Insufficient light causes eyestrain and headaches. Too much light, like that of the sun. a powerful lamp or a laser torch can Injure the retina. Do not look at the sun or a powerful light directly. Never rub your eyes. If particles of dust go Into your eyes, wash your eyes with clean water. If there Is no improvement go to a doctor. Wash your eyes frequently with clean water. Always read at the normal distance for vision. Do not read by bringing your book too close to your eyes or keeping It too far. 16.9 Visually Challenged Persons Can Read and Write Some persons, including children, can be visually handicapped. They have very limited vision to see things. Some persons cannot see at all since birth. Some persons may lose their eyesight because of a disease. Such persons try to identify things by touching and listening to voices more carefully. They develop their other senses more sharply. However, additional resources can enable them to develop their capabilities further.