Short and Long sightedness,

What Causes the defect?

The cause of short sightedness is by certain diseases or drugs and it can also be the first sign of type 2 diabetes.

The cause of long sightedness is through your family, it has been identified as a gene. It is said that many children are born with long sightedness as it resolves itself as they grow older and their eyes develop.

 The symptoms displayed?

The symptoms for short sightedness are that they would not be able to see objects or things from far for that it would appear blurry or out of place.

The symptoms for long sightedness are that a person is unable to see or read something close by such as book or computer screen. It is said that if parents suffer from long sightedness, there is a chance that the child he may have might also have too.

Propose what sort of lens may be used to correct each vision?

Short sightedness is corrected by wearing spectacles with concave lenses.

Long sightedness is corrected by wearing spectacles with convex lenses.