Refraction errors

Short sightedness (nearsightedness)

Short sightedness (nearsightedness)

If the eyeball is too long or the lens too spherical, the image of distant objects is brought to a focus in front of the retina and is out of focus again before the light strikes the retina.

Nearby objects can be seen more easily but further away objects are harder to see.

This condition generally becomes progressively worse during adolescence but stabilises in early adulthood. It is inherited and can be occupational or caused by trauma or disease.