Myopia is a visual defect in which distant objects appear blurred because their images
are focused in front of the retina (the light-sensitive
layer at the back of the eye). So-called simple
myopia, or near-sightedness ("short-sightedness" in the UK), is due to the
eyeball being slightly longer, or the cornea (the front part of the eye) being slightly steeper, than normal. It can
be easily corrected by using diverging spectacle lenses or contact
lenses to move the image back to the retina or through the surgical
procedure known as LASIK (laser in situ keratomileusis).
|Image © Nucleus Communications,
Simple myopia tends to run in families and may develop rapidly or slowly,
often gradually getting worse during childhood and adolescence. It affects
boys and girls equally, often stabilizing during young adulthood.