Near-Sightedness - OK and Then What?
There are many short sighted people in the world. It is probably the most frequently encountered reason for needing to wear spectacles - at least in more modern countries where blindness due to nutritional deficiencies or infections are uncommon.
Essentially, the difficulty with this condition is that the eyeball is simply too lengthy to permit the light from a distant object to be focussed into view, quickly enough by the eye’s cornea and lens system. Therefore there is a blurry feel to the image that is certainly relayed onto the back of the retina. The eyeball is too long compared with the focusing power of the cornea and lens. This means light rays from objects in the distance are focused in front of the retina because they’ve been bent too much by the cornea and lens. They find getting a clear image of distant objects is difficult, but seeing things close up is fine. Children may perform poorly in class because they’re unable to read what’s on the whiteboard.Headache is a common symptom. The child is unable to do his lessons with any pleasure because of the strain on his eyes. Often, the condition is first noticed in older children and young teenagers. Near sightedness can run in families, so short-sighted parents are more alert to the possibility of their children having sight difficulties. Short sightedness can be corrected with a concave lens that makes the light rays diverge and focus accurately on the retina. Sometimes, laser surgery can reshape the cornea.Alternatively, you could buy some spectacles to solve the problem.
