ABSTRACT
In myopia, as a general rule the eyeball is too long for the focussing system of the eye. Myopic eyes may extend up to 30-35mm in length; alternatively, the focusing system at the front of the eye, principally the cornea, bends rays of light excessively, causing the focussed image to fall short of the retina. A nearsighted or myopic eye has a far point of clear vision which is very close to the eye, depending on the degree of myopia. One dioptre (1D) of myopia would give an eye a far point of 1m, while 10D would give a far point of just 10cm-in other words, beyond 10cm all the image is blurred.
