The word short-sightedness or myopia describes the problem when you can’t see far into the distance. Of the many people you are aware with spectacles, it is likely that a lot of them have this issue Essentially, the difficulty in this condition is that the eyeball is too lengthy to allow 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 specifically relayed onto the back of the retina. The eyeball is simply 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.

So, people with near sightedness see things that are nearby without any difficulty. But if they are trying to look at something in the distance, they end up squinting to see the image more clearly. You commonly find that younger people suffer from this condition more than older people, at least that’s when the problem starts. Hence, you find kids getting teased about wearing spectacles at school.Actually the problem can even get better as an adult, as the muscles controlling the lens get weaker or stiffer Excessive study at school; faulty positions when reading and writing, bad light for work will all cause short-sight in after life.

You can correct the problem of the misplaced focal point by introducing another “correcting” lens in front of the eye - either as a set of spectacles or contact lenses